N. Taylor Mullen 5ea6ba40cd Update Roslyn dependencies to align with SDK and VS. ... - Updated instances of our code to no longer use reference type checks on `ISymbol`s. This was a new restriction added by Roslyn [here](https://github.com/dotnet/roslyn-analyzers/issues/2084). We also have a follow up AspNetCore issue [here](https://github.com/aspnet/AspNetCore/issues/12747) to bring these level of changes to AspNetCore. - Had to pin `Microsoft.CodeAnalysis.Analyzers` in our VSIX projects in order to workaround version conflicts of `Microsoft.CodeAnalysis.Analyzers`. The version conflict is introduced from our dependency on `Microsoft.VisualStudio.ProjectSystem.Managed.VS`. It transitively depends on `Microsoft.CodeAnalysis.Analyzers` `2.6.3` where as our latest Roslyn bits transitively depend on `Microsoft.CodeAnlalysis.Analyzers` `2.9.4`. Tried updating to the latest, private, `Microsoft.VisualStudio.ProjectSystem.Managed.VS` but it also had the version conflict. - Pinned our runtime bits to the latest public Roslyn NuGet package and pinned our tooling bits to the latest private NuGet package (both are compatible flavors of 3.3.0). \n\nCommit migrated from 83d5e2c36f		2019-07-31 10:52:21 -07:00
src	Update Roslyn dependencies to align with SDK and VS.	2019-07-31 10:52:21 -07:00