Add 'Microsoft.DiaSymReader.Native.*.dll' to the VisualStudioSetup VSIX

Add public API to create an error namespace symbol.

Constrain locations we look for assembly references

Ensure the 'Add' name actually matches before accepting any invocation expression.
Fixes #16158

Updating the Microsoft.VisualStudio.IntegrationTest.Utilities.nuspec to include Roslyn.Services.Test.Utilities

Avoid showing the builder while typing type args

make sure RegisterWorkspace is called from foreground thread

Add vsix binaries verification to microbuild project

Commit attribute named parameter items on space

Fixes https://github.com/dotnet/roslyn/issues/14492

Report an error about an invalid assembly name rather than throwing an exception.

Updating the Microsoft.VisualStudio.IntegrationTest.Utilities.nuspec to include Roslyn.Services.Test.Utilities

Fixes #16038

Fixes https://devdiv.visualstudio.com/DevDiv/_workitems?id=233669.

Fixes #16122

Fixes #16171

Fix FSA option not being persisted

Rollback API change to unbreak TypeScript.

The list of insertion files was missing System.Xml.ReaderWriter.dll, which breaks the toolset package and also results in an incomplete VS insertion.

Fixes #14365.

This changes our build so it will no longer consider the GAC when resolving assembly references.

Fix builds on Dev15 only