Ensure that all *.props, *.targest, and *.*proj files have 'ToolsVersion="14.0"

BuildAndTest.proj

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright (c)  Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information. -->
-<Project DefaultTargets="BuildAndTest" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="BuildAndTest" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
 
   <Import Project="$(MSBuildThisFileDirectory)build\Targets\Dependencies.props" />
 

build/MSBuildToolset/MSBuildToolset.xproj

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright (c)  Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information. -->
-<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <VisualStudioVersion Condition="'$(VisualStudioVersion)' == ''">14.0</VisualStudioVersion>
     <VSToolsPath Condition="'$(VSToolsPath)' == ''">$(MSBuildExtensionsPath32)\Microsoft\VisualStudio\v$(VisualStudioVersion)</VSToolsPath>

build/NuGetAdditionalFiles/Microsoft.Net.Compilers.props

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright (c)  Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information. -->
-<Project DefaultTargets="Build" InitialTargets="ValidateMSBuildToolsVersion" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="Build" InitialTargets="ValidateMSBuildToolsVersion" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <!-- The UsingTask, UseSharedCompilation, and ToolPath/Exe variables all interact to
        choose which compiler path to use and whether or not to use the compiler server.
        If UsingTask and UseSharedCompilation are set then the compiler server next to the

build/Targets/Dependencies.props

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright (c)  Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information. -->
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <!--Generated file, do not directly edit.  Run "RepoUtil change" to regenerate-->
   <PropertyGroup>
     <GitLinkVersion>2.3.0</GitLinkVersion>

build/Targets/DisableStandardFrameworkResolution.targets

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright (c)  Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information. -->
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
 
   <Target Name="GetReferenceAssemblyPaths" />
   <Target Name="GetFrameworkPaths" />

build/Targets/GenerateAssemblyInfo.targets

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright (c)  Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information. -->
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Choose>
     <When Condition="'$(OfficialBuild)' != 'true'">
       <!-- On non-official builds we don't burn in a git sha.  In large part because it

build/Targets/GenerateCompilerExecutableBindingRedirects.targets

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright (c)  Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information. -->
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <!-- The inclusion of this file will cause the resulting .exe.config to contain redirects for our core compiler assemblies,
        which is needed for things like analyzers to load. -->
 

build/Targets/GenerateCompilerInternals.props

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright (c)  Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information. -->
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
 
   <!-- The syntax generation actually outputs three files: .Syntax, .Internal and .Main -->
   <PropertyGroup Condition="'$(SyntaxDefinition)' != ''">

build/Targets/GenerateCompilerInternals.targets

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright (c)  Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information. -->
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemGroup>
     <AvailableItemName Include="SyntaxDefinition" />
     <AvailableItemName Include="SyntaxTestDefinition" />

build/Targets/GenerateInternalsVisibleTo.targets

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright (c)  Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information. -->
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <GeneratedInternalsVisibleToFile>$(IntermediateOutputPath)GeneratedInternalsVisibleTo$(DefaultLanguageSourceExtension)</GeneratedInternalsVisibleToFile>
   </PropertyGroup>

build/Targets/GetProjectsReferencingProjectJsonFiles.targets

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright (c)  Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information. -->
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <UsingTask TaskName="ProjectReferencesTask" AssemblyFile="$(NuGetTasksAssemblyPath)" Condition="'$(MSBuildThisFileExtension)' == '.xproj'" />
   <Target Name="_NuGet_GetProjectsReferencingProjectJsonInternal"
           DependsOnTargets="_SplitProjectReferencesByFileExistence"

build/Targets/GetProjectsReferencingProjectJsonFilesEntryPoint.targets

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright (c)  Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information. -->
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Target Name="NuGet_GetProjectsReferencingProjectJson">
     <ItemGroup>
       <NuGet_ProjectReferenceToResolveItems Include="$(NuGet_ProjectReferenceToResolve)" />

build/Targets/Imports.targets

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright (c)  Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information. -->
-<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
 
   <Choose>
     <When Condition="'$(RoslynProjectType)' == 'ExeNonDeployment'">

build/Targets/Microsoft.Net.Compilers.props

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright (c)  Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information. -->
-<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
 
   <PropertyGroup>
     <ToolsetCompilerPath>$(NuGetPackageRoot)\Microsoft.Net.Compilers\$(ToolsetCompilerPackageVersion)\tools</ToolsetCompilerPath>

build/Targets/Roslyn.Toolsets.Xunit.targets

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright (c)  Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information. -->
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
 
   <PropertyGroup>
     <XUnitPath>$(NuGetPackageRoot)\xunit.runner.console\$(xunitrunnerconsoleVersion)\tools\xunit.console.x86.exe</XUnitPath>

build/Targets/Settings.props

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright (c)  Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information. -->
-<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
 
   <Import Project="Versions.props" />
 

build/Targets/Versions.props

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright (c)  Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information. -->
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
 
   <!-- This controls the version numbers of the build that we are producing -->
 

build/Toolset/Toolset.csproj

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright (c)  Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information. -->
-<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="..\Targets\Settings.props" />
   <PropertyGroup>
     <Platform Condition="'$(Platform)' == ''">AnyCPU</Platform>

src/Compilers/CSharp/CSharpAnalyzerDriver/CSharpAnalyzerDriver.projitems

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright (c)  Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information. -->
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <MSBuildAllProjects>$(MSBuildAllProjects);$(MSBuildThisFileFullPath)</MSBuildAllProjects>
     <HasSharedItems>true</HasSharedItems>

src/Compilers/CSharp/CSharpAnalyzerDriver/CSharpAnalyzerDriver.shproj

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright (c)  Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information. -->
-<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup Label="Globals">
     <ProjectGuid>54e08bf5-f819-404f-a18d-0ab9ea81ea04</ProjectGuid>
     <MinimumVisualStudioVersion>14.0</MinimumVisualStudioVersion>

src/Compilers/CSharp/CscCore/CscCore.csproj

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright (c)  Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information. -->
-<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="..\..\..\..\build\Targets\Settings.props" />
   <PropertyGroup>
     <Platform Condition="'$(Platform)' == ''">x64</Platform>

src/Compilers/CSharp/Portable/CSharpCodeAnalysis.csproj

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright (c)  Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information. -->
-<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="..\..\..\..\build\Targets\Settings.props" />
   <PropertyGroup>
     <Platform Condition="'$(Platform)' == ''">AnyCPU</Platform>

src/Compilers/CSharp/Test/CommandLine/CSharpCommandLineTest.csproj

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright (c)  Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information. -->
-<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="..\..\..\..\..\build\Targets\Settings.props" />
   <PropertyGroup>
     <NonShipping>true</NonShipping>

src/Compilers/CSharp/Test/Emit/CSharpCompilerEmitTest.csproj

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright (c)  Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information. -->
-<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="..\..\..\..\..\build\Targets\Settings.props" />
   <PropertyGroup>
     <NonShipping>true</NonShipping>

src/Compilers/CSharp/Test/Semantic/CSharpCompilerSemanticTest.csproj

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright (c)  Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information. -->
-<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="..\..\..\..\..\build\Targets\Settings.props" />
   <PropertyGroup>
     <NonShipping>true</NonShipping>

src/Compilers/CSharp/Test/Symbol/CSharpCompilerSymbolTest.csproj

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright (c)  Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information. -->
-<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="..\..\..\..\..\build\Targets\Settings.props" />
   <PropertyGroup>
     <NonShipping>true</NonShipping>

src/Compilers/CSharp/Test/Syntax/CSharpCompilerSyntaxTest.csproj

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright (c)  Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information. -->
-<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="..\..\..\..\..\build\Targets\Settings.props" />
   <PropertyGroup>
     <NonShipping>true</NonShipping>

src/Compilers/CSharp/Test/WinRT/CSharpWinRTTest.csproj

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright (c)  Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information. -->
-<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="..\..\..\..\..\build\Targets\Settings.props" />
   <PropertyGroup>
     <NonShipping>true</NonShipping>

src/Compilers/CSharp/csc/csc.csproj

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright (c)  Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information. -->
-<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="..\..\..\..\build\Targets\Settings.props" />
   <Import Project="..\..\..\..\build\Targets\GenerateCompilerExecutableBindingRedirects.targets" />
   <PropertyGroup>

src/Compilers/Core/AnalyzerDriver/AnalyzerDriver.projitems

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright (c)  Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information. -->
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <MSBuildAllProjects>$(MSBuildAllProjects);$(MSBuildThisFileFullPath)</MSBuildAllProjects>
     <HasSharedItems>true</HasSharedItems>

src/Compilers/Core/AnalyzerDriver/AnalyzerDriver.shproj

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright (c)  Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information. -->
-<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup Label="Globals">
     <ProjectGuid>d0bc9be7-24f6-40ca-8dc6-fcb93bd44b34</ProjectGuid>
     <MinimumVisualStudioVersion>14.0</MinimumVisualStudioVersion>

src/Compilers/Core/CodeAnalysisTest/CodeAnalysisTest.csproj

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright (c)  Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information. -->
-<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="..\..\..\..\build\Targets\Settings.props" />
   <PropertyGroup>
     <Nonshipping>true</Nonshipping>

src/Compilers/Core/CommandLine/CommandLine.projitems

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright (c)  Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information. -->
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <MSBuildAllProjects>$(MSBuildAllProjects);$(MSBuildThisFileFullPath)</MSBuildAllProjects>
     <HasSharedItems>true</HasSharedItems>

src/Compilers/Core/CommandLine/CommandLine.shproj

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright (c)  Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information. -->
-<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup Label="Globals">
     <ProjectGuid>ad6f474e-e6d4-4217-91f3-b7af1be31ccc</ProjectGuid>
     <MinimumVisualStudioVersion>14.0</MinimumVisualStudioVersion>

src/Compilers/Core/MSBuildTask/MSBuildTask.csproj

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright (c)  Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information. -->
-<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="..\..\..\..\build\Targets\Settings.props" />
   <PropertyGroup>
     <MinimumVisualStudioVersion>14.0</MinimumVisualStudioVersion>

src/Compilers/Core/MSBuildTask/Microsoft.CSharp.Core.targets

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright (c)  Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information. -->
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Target Name="CoreCompile"
           Inputs="$(MSBuildAllProjects);
                   @(Compile);

src/Compilers/Core/MSBuildTask/Microsoft.VisualBasic.Core.targets

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright (c)  Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information. -->
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Target Name="CoreCompile"
           Inputs="$(MSBuildAllProjects);
                   @(Compile);

src/Compilers/Core/MSBuildTaskTests/MSBuildTaskTests.csproj

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright (c)  Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information. -->
-<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="..\..\..\..\build\Targets\Settings.props" />
   <PropertyGroup>
     <Nonshipping>true</Nonshipping>

src/Compilers/Core/Portable/CodeAnalysis.csproj

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright (c)  Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information. -->
-<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="..\..\..\..\build\Targets\Settings.props" />
   <PropertyGroup>
     <Platform Condition="'$(Platform)' == ''">AnyCPU</Platform>

src/Compilers/Extension/CompilerExtension.csproj

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright (c)  Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information. -->
-<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="..\..\..\build\Targets\Settings.props" />
   <PropertyGroup>
     <Platform Condition="'$(Platform)' == ''">AnyCPU</Platform>

src/Compilers/RealParserTests/CLibraryShim/CLibraryShim.vcxproj

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright (c)  Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information. -->
-<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemGroup Label="ProjectConfigurations">
     <ProjectConfiguration Include="Debug|Win32">
       <Configuration>Debug</Configuration>

src/Compilers/RealParserTests/RealParserTests.csproj

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright (c)  Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information. -->
-<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <Configuration Condition="'$(Configuration)' == ''">Debug</Configuration>
     <Platform Condition="'$(Platform)' == ''">AnyCPU</Platform>

src/Compilers/Server/PortableServer/PortableServer.csproj

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright (c)  Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information. -->
-<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="..\..\..\..\build\Targets\Settings.props" />
   <PropertyGroup>
     <Platform Condition="'$(Platform)' == ''">x64</Platform>

src/Compilers/Server/ServerShared/ServerShared.projitems

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright (c)  Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information. -->
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <MSBuildAllProjects>$(MSBuildAllProjects);$(MSBuildThisFileFullPath)</MSBuildAllProjects>
     <HasSharedItems>true</HasSharedItems>

src/Compilers/Server/ServerShared/ServerShared.shproj

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright (c)  Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information. -->
-<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup Label="Globals">
     <ProjectGuid>32691768-af9c-4cae-9d0f-10721091b9aa</ProjectGuid>
     <MinimumVisualStudioVersion>14.0</MinimumVisualStudioVersion>

src/Compilers/Server/VBCSCompiler/VBCSCompiler.csproj

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright (c)  Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information. -->
-<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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src/ExpressionEvaluator/Core/Source/FunctionResolver/FunctionResolver.csproj

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src/ExpressionEvaluator/Core/Source/ResultProvider/NetFX20/ResultProvider.NetFX20.csproj

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+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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     <TargetNetFX20>true</TargetNetFX20>
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src/ExpressionEvaluator/Core/Source/ResultProvider/Portable/ResultProvider.Portable.csproj

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 <!-- Copyright (c)  Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information. -->
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+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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src/ExpressionEvaluator/Core/Source/ResultProvider/ResultProvider.projitems

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+<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <MSBuildAllProjects>$(MSBuildAllProjects);$(MSBuildThisFileFullPath)</MSBuildAllProjects>
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src/ExpressionEvaluator/Core/Source/ResultProvider/ResultProvider.shproj

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+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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src/ExpressionEvaluator/Core/Test/ExpressionCompiler/ExpressionCompilerTestUtilities.csproj

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 <!-- Copyright (c)  Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information. -->
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+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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src/ExpressionEvaluator/Core/Test/FunctionResolver/FunctionResolverTest.csproj

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 <!-- Copyright (c)  Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information. -->
-<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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src/ExpressionEvaluator/Core/Test/ResultProvider/ResultProviderTestUtilities.csproj

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright (c)  Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information. -->
-<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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   <PropertyGroup>
     <NonShipping>true</NonShipping>

src/ExpressionEvaluator/CoreSystem.Settings.targets

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 <!-- Copyright (c)  Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information. -->
-<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <NoConfig>true</NoConfig>
     <NoStandardLib>true</NoStandardLib>

src/ExpressionEvaluator/Package/ExpressionEvaluatorPackage.csproj

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 <!-- Copyright (c)  Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information. -->
-<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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   <PropertyGroup>
     <Platform Condition="'$(Platform)' == ''">AnyCPU</Platform>