Make the ExpressionCompiler assemblies portable

1. Compile them against Profile7.
   a. Swap out a few APIs (e.g. using GetTypeInfo for reflection).
   b. Introduce an abstraction layer so that we don't have to instantiate
   DkmDataItem (caused a VerificationException).
   c. Include WindowsProxy.winmd as an EmbeddedResource directly, rather
   than through a resx file.
2. Swap the output locations of the ResultProvider projects: Portable goes
to the main output directory and NetFX20 goes to a subdirectory (NetFX20).
3. Include the Portable ResultProvider assemblies in the EE vsix, rather
than the NetFX20 ones.

Fix IsDiagnosticAnalyzerSuppressed check for analyzers that have NotConfigurable diagnostics which are disabled by default.

Current logic didn't account for the fact that even though these descriptors are non-configurable, they might be turned off by default and hence be suppressed.

Fix IsDiagnosticAnalyzerSuppressed check for analyzers that have NotConfigurable diagnostics which are disabled by default.

Current logic didn't account for the fact that even though these descriptors are non-configurable, they might be turned off by default and hence be suppressed.

Code cleanup in the Microsoft.CodeAnalysis project

This adds a bootstrap build step to our Linux verification process.  The
CI test will now build csc and then use that result to rebuild csc.
This will give us verification that we can fully bootstrap our compiler
(on Linux!).

closes #1637

Allow INavigableItems to have child items.

We don't need to build FakeSign before CodeAnalysis anymore

Create props file in the System.Runtime.Analyzers with CodeAnalysisOverr...

Fix weak reference problem with Document and TextAndVersion

Create props file in the System.Runtime.Analyzers with CodeAnalysisOverrides so that the rules implemented by these analyzers are not run when FxCop runs for the project.

PERF: Avoid byte[] allocations in StringHeap

update toolset compiler and roslyn diagnostics for roslyn main

Enable bootstrap builds

The previous name was easily confused with a boolean value.  Changed to
have the Path suffix to make the intent of the value clearer.

this is to disable expensive analyzer (UnusedDeclarationAnalyzer)

use localized resources in unit tests

cleanup progression graph query creation

also undo an eager localization of a string

This adds a new supported MSBuild property BootstrapBuild.  The value of
this must point to a directory containing a functional version of csc
and vbc.  When specified these executables will be used to build the
product instead of the versions provided in NuGet.

This provides us a very simple way of enabling bootstrap builds.

Fix build status indicator columns

The Linux indicator was in the Windows column and vice versa.

Jenkins build script for Linux

This will be used by TypeScript so it can display FindRefernces result in a
tree form similar to how C#/VB does it.  i.e. it can show results like:

Decl1
|--Ref1
|--Ref2
Decl2
|--Ref3
|--Ref4

Fix failure in FileStream lightup on contracts

Fixes #249 : Fix IDE diagnostics test framework to use DiagnosticAnalyzerService to compute diagnostics rather than DiagnosticAnalyzerDriver.

This change serves multiple purposes:
1) Makes our test framework consistent with the IDE scenario in fetching diagnostics. We have missed out on multiple regressions where the core IDE DiagnosticAnalyzerDriver does the right thing and hence the tests pass, but the DiagnosticService in IDE does additional filtering and certain diagnostics are not reported in VS. This change should avoid such bugs.
2) Enable testing for diagnostics V2 engine work that JohnHamby is doing to merge IDE and compiler analyzer drivers. For this engine, there is no IDE driver and hence existing IDE diagnostics tests can't be run. This change should enable running IDE diagnostic tests on V2 engine.
3) Move a whole bunch of test only code in DiagnosticAnalyzerService_Test.cs into the test layer.

The initial attempt at a linux build script.  For now this is very
simple: just build csc.exe on Linux.