Number of infrastructure fixes

Change procdump so it captures dumps when a stack overflow exception
occurs. Using the command line outlined here:

https://blogs.msdn.microsoft.com/benjaminperkins/2017/06/28/capture-a-stackoverflowexception-and-make-a-dump-0xc00000fd/

closes #25603

There is now just a `-build` option. The `-buildAll` option was
introduced at the time when our official and normal build had fairly
significant differences. Now the delta is very small. Removing this as
it's no longer relevant.

DevDivInsertionFiles.vbproj is the last project which isn't included in
Roslyn.sln. Included it there and remove the solution that used to drive
it's build.

This change moves the captured xunit standard output file into the
standard log folder.

closes #25602

Merge dev15.6.x to dev15.7.x

Raise WorkspaceChanged with a new SourceText even if we have a new snapshot without changes (#25576)

* Fixed DDRIT failure (#25551)

* made sure we raise workspace changed events even when there is no text change.

this is needed to bring workspace up to date with latest text snapshot after we don't merge 2 text snapshot to 1 source text if content is same.

see this for more detail - https://github.com/dotnet/roslyn/pull/24849

* added comments on why we need to process all text change events

* removed changes empty check. now it is possible to have empty changes.

* remove non-empty from comment since set now can be empty.

Reduce number of stack frames to prevent StackOverflow until we have …

* Remove src/Setup/DevDivPackagesRoslyn/

This contained a list of packages that we depended on and needed
facades deployed into Visual Studio. We already have
VisualStudioSetup.Dependencies that already (should have...) contained
all the facades and more. We can just consume that project instead
of having yet another duplication of facade lists.

* Fix casing

* Also include the CompilerExtension as a source of facades that we must include

This ensures that if the compiler adds a new facade but we don't update
VisualStudioSetup.Dependencies (either intentionally or by accident)
we still will include the right facades.

* Include DevDivPackagesDebugger into Roslyn.sln

By doing this, the VisualStudioSetup.Dependencies.csproj will now
figure out the highest version of our own dependencies and the debugger
dependencies, and create a single package that we can deploy that
contains all of them.

* Exclude inserting packages that are created by VS itself

* Remove ProjectGuid from DevDivPackagesDebugger.csproj

This makes BuildBoss happy.

Move all build diagnostic info into Logs dir

This moves all of our build diagnistic output into the same folder:
Binaries\Configuration\Logs. Having it in a single folder is necessary
for us to upload the information using the VSTS Build Artifact task.

Jenkins should be unaffected. It supports and uses wildcards for the
file types we need to be uploaded on failed builds.

Fix race condition in analyzer driver where multiple threads attempti…

Add more casts to (object) to avoid JITting the dynamic binder

Fix ForegroundThreadAffinitizedObject.InvokeBelowInputPriority on non…

Merge dev15.6.x to dev15.7.x

 Merge 'dotnet/features/ExpressionVariables' into 'dotnet/dev15.7.x'

The code was invoking into user32.dll, thus causing an exception on non-Windows. The end result of this was that all actions using this were discarded.

Fixes #25525

Merging feature "tuple equality" into dev15.7.x

Merge 'dotnet/dev15.7.x' into ExpressionVariables