...to expose the IVsWindowFrame for PTVS.

`VsInteractiveWindow` is the concrete implementation of
`IVsInteractiveWindow` that we hand out in the public API.  Since it
extends ToolWindowPane, our public API effectively depends on that type
(since callers can upcast).  Eliminate the dependency by using
composition, rather than inheritance.

TODO: Expose the `IVsWindowFrame` for PTVS.

Upgrade to NuGet to 3.4.0.665 to fix #9159

Reduce allocations in deterministic builds.

Prefix assembly name with project name

Revert the revert of PR #8766

Updates BuildAndTest.proj to fail the build if test assemblies are
found outside of well-known test directories.

This reverts commit 61a5ae49.

This reverts commit 57a34148.

This reverts commit 8108db57.

This reverts commit 760e1204.

Log commit information before we start a CI build

Case insensitive OSTYPE comparison

By passing --pretty=raw we get the full SHA1s of all parent commits,
as well as the tree SHA1 so we can confirm content as well.

Move to SHA2 code signing.

Revert "Temporary disable archiving"

Merge stabilization into master

Fix issue 4370 - heading hidden sequence points now positioned within document. 

Use VsMEF via NuGet

Grant internals visible access to Telemetry from EditorFeatures

Set default 'Platform' to AnyCPU for csccore and vbccore.

This reverts commit 936104f0.

Fix bugs in TrueFalseKeywordRecommender.ShouldPreselect

We shouldn't access CurrentSolution more than once if the workspace
would change underneath us, and we can ensure we get the right document
directly if we don't go through file path.

In #8701, a comparison was added for `bsd`. It worked on NetBSD as bash
returns `netbsd` for `echo $OSTYPE`. However, today I discovered that
on FreeBSD, it returns `FreeBSD` with upper cased `BSD`. This change
adds the mixed casing to avoid such problems in future for other
BSD-like OSes.

Temporary disable archiving