Port over some changes from fsharp4 to unblock CI build

closes #341

commit 6bd675668d1b34fecde9ea5bf8063b727f6d6b35
Author: latkin <latkin@microsoft.com>
Date:   Thu Apr 2 10:07:26 2015 -0700

    Simplification

commit 7554fca20850823d524ceee2740145ad0330acba
Author: latkin <latkin@microsoft.com>
Date:   Mon Mar 9 20:59:45 2015 +0100

    Port over some changes from fsharp4 to unblock CI build

vsintegration/src/deployment/EnableOpenSource/EnableOpenSource.csproj

@@ -44,6 +44,10 @@
     <CopyBuildOutputToOutputDirectory>false</CopyBuildOutputToOutputDirectory>
     <CopyOutputSymbolsToOutputDirectory>false</CopyOutputSymbolsToOutputDirectory>
     <FSharpSourcesRoot Condition="'$(FSharpSourcesRoot)' == ''">..\..\..</FSharpSourcesRoot>
+    <!-- Eliminate MSBuild warning due to including FSI.exe which is x86 -->
+    <ResolveAssemblyWarnOrErrorOnTargetArchitectureMismatch>None</ResolveAssemblyWarnOrErrorOnTargetArchitectureMismatch>
+    <DeployExtension Condition="'$(AppVeyor)' != ''">False</DeployExtension>
+    <DeployExtension Condition="'$(AppVeyor)' == ''">True</DeployExtension>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)' == 'Debug' or '$(Configuration)' == 'VSDebug' ">
     <StartAction>Program</StartAction>