Add framework to diagnostic from compilation

[troydai]

Addressing #1722

Adding framework information to the diagnostic message print to the Console. It is supposed to be picked up by VS and flow to WTE with the framework information.

We used to use CSharpDiagnosticFormatter to format the Diagnostic into message. However it is basically not extensible (with one virtual method do it all).
https://github.com/dotnet/roslyn/blob/master/src/Compilers/Core/Portable/Diagnostic/DiagnosticFormatter.cs

I added RoslynDiagnosticFormatter to serialize the message using the same logic as DiagnosticFormatter but insert the framework in it.

The information represents framework is it's identity. I was suggested by @BillHiebert that version is not required. I won't be able to insert the friendly name because Microsoft.Framework.Runtime.Roslyn.Common doesn't depends on Microsoft.Framework.Runtime to avoid circular dependencies. But the framework identity should be enough to parse it back to FrameworkName.

Here's a sample output:

$ dnu build
Microsoft .NET Development Utility CLR-x86-1.0.0-t150716000045


Building playground for DNX,Version=v4.5.1
  Using Project dependency playground 1.0.0
    Source: C:\code\playground\project.json

  Using Assembly dependency framework/fx/mscorlib 4.0.0.0
    Source: C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.5.1\mscorlib.dll

  Using Assembly dependency framework/fx/System 4.0.0.0
    Source: C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.5.1\System.dll

  Using Assembly dependency framework/fx/System.Core 4.0.0.0
    Source: C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.5.1\System.Core.dll

  Using Assembly dependency framework/fx/Microsoft.CSharp 4.0.0.0
    Source: C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.5.1\Microsoft.CSharp.dll

C:\code\playground\Program.cs(6,5): DNX error CS1519: Invalid token '}' in class, struct, or interface member declaration

Building playground for DNXCore,Version=v5.0
  Using Project dependency playground 1.0.0
    Source: C:\code\playground\project.json

  Using Package dependency System.Runtime 4.0.20-beta-23110
    Source: C:\Users\Xueyuan\.dnx\packages\System.Runtime\4.0.20-beta-23110
    File: ref\dotnet\System.Runtime.dll

  Using Package dependency System.Private.Uri 4.0.0-beta-23110
    Source: C:\Users\Xueyuan\.dnx\packages\System.Private.Uri\4.0.0-beta-23110

C:\code\playground\Program.cs(6,5): DNXCore error CS1519: Invalid token '}' in class, struct, or interface member declaration

Building playground for .NETPlatform,Version=v5.0
  Using Project dependency playground 1.0.0
    Source: C:\code\playground\project.json

  Using Package dependency System.Runtime 4.0.20-beta-23110
    Source: C:\Users\Xueyuan\.dnx\packages\System.Runtime\4.0.20-beta-23110
    File: ref\dotnet\System.Runtime.dll

C:\code\playground\Program.cs(6,5): .NETPlatform error CS1519: Invalid token '}' in class, struct, or interface member declaration

[troydai]

/cc @davidfowl @BillHiebert

[troydai]

/cc @muratg