Rename IsEquivalentToSwitchExpression -> SetInitialOrIsEquivalentToSwitchExpression
Rename PatternSwitchSection -> SwitchSectionFromLabels

Merge master into post-dev15

Fix issue with 'Convert Prop to Method' with member bindings.
Fixes #16157

Fix crash in outlining when indexing out of an incomplete multiline comment.
Fixes #16186

Add guids back into the FAR results so that 'filtering' works properly.
Fixes #15830

Merging on behalf of @alrz. Thanks for the contribution.

Revert "move StreamJsonRpc to latest version"

Fix caching logic

Update our binary numbering for the new year

Don't report type parameter variance errors during parsing.

Allow parsing any types in catch clauses in the parser.

We've previously stamped binaries with numbers like ymmdd, but for 2017
that would mean our number would be 70101 which is too big for some
PE file headers. We'll update to continue incrementing the month field
instead.

Fixes dotnet/roslyn#12038.

The caching logic is now much stricture about the handling of missing
references during caching.  There are valid cases for missing
references, light up features.  But there are other cases where it
simply repreesnts an error.  The code now defaults to assuming missing
references are an error and opts in the cases where it's known to be
okay.

Ignore missing directory in ShadowCopyAnalyzerAssemblyLoader.DeleteLeftoverDirectories

Disable feature when it would cause an error with expression trees.

Fixes #16028

Cleaning up our *.*proj, *.targets, and *.props files.

Fix scripting test