* Harden compiler against exceptions during stream dispose

It's possible (likely even) for one of the streams the compiler uses for
output files will throw during disposal. Currently this crashes the
compiler. This change adds a wrapper type around stream to catch
exceptions during disposal and report them as diagnostics instead.

Fixes https://devdiv.visualstudio.com/DevDiv/_workitems?id=217719

* Add VB tests

* Respond to PR comments

* Respond to PR comments

* Respond to PR comments

* Conform to style guidelines

Fix overlapping diagnostic ids

Disable 'Rename File' if we're in a CPS project.

Fixes #16546

Be resilient to not having a containing type for a backing field.

Be resilient to getting an empty list of diagnostics when fixing all.

Fixes #15999

Calling Wait() on a task means it will block the current thread until
    the underlying task is complete, however that task may still run on a
    background thread.  We are seeing an error where the async method is
    being scheduled to a background thread when we try and commit an edit to
    the buffer.  Edits to the buffer can only be made from the UI thread so
    exceptions are thrown.

    The simplest fix here is to not make the method async at all.

Improve EnC error message when DPL is on

auto-close a VSO PR that contains no commits

Progression capabilities

Update DSR dependencies to release

Fixes #16531

Stop applying ComVisible attribute to embedded value types.

Build cleanup

Enable test that is passing now.

Closes #14529.

Remove LINQ allocations from FAR item display logic

Merge thread starvation fix into master

Avoid GUID conflicts for Naming Styles Symbol Specifications (causes Naming Styles to not work and the Tools | Options page to not load)

Do not fail in the NamingStyleCodeFix when we cannot find the symbol (causes the failure InfoBar to be shown)

Don't emit casing-related naming violations when the violating character has no casing (making the feature noisy/unusable in other cultures)

make sure we empty out information in solution/project/documentInfo w…

Ensure that we don't break if we recurse into methods during symbol-key reader

Fixes #16585

Restore detection of an ambiguous method type argument inference.

Expand the lifetime of locals declared within CasePatternSwitchLabelSyntax to the entire switch body.

Fixes #16513

Fixes https://devdiv.visualstudio.com/DefaultCollection/DevDiv/_workitems?id=336030
Fixes https://devdiv.visualstudio.com/DefaultCollection/DevDiv/_workitems?id=294570
Fixes https://devdiv.visualstudio.com/DefaultCollection/DevDiv/_workitems?id=363714
Fixes https://devdiv.visualstudio.com/DefaultCollection/DevDiv/_workitems?id=336030
Fixes https://devdiv.visualstudio.com/DefaultCollection/DevDiv/_workitems?id=364165
Fixes #16296
Also adds test for #16559

Change progression providers to use capabilities instead of IntelliSense type. This enables them to work on both .Net core projects and legacy projects.

Revert "Change progression providers to use capabilities instead of IntelliSense type. This enables them to work on both .Net core projects and legacy projects."

This reverts commit 7d4c0da7.

This reverts commit 2209f5cd.