Closes #47974

Add NRT annotations to FAR engine

Razor local rename

Fix override completion inside records.

Diagnostic service cleanup

InlineParameterNameHints:  Support record base type

Enter suggestion mode for potential lambda expression

merge features/lspClassifications into master

Remove bogus assert

Add code folding support for records.

Merge branch 'diagnosticServiceCleanup' of https://github.com/CyrusNajmabadi/roslyn into diagnosticServiceCleanup

Update configs

Merge remote-tracking branch 'upstream/features/lspClassifications' into merges/merge-features/lspClassifications-to-master

Co-authored-by: NManish Vasani <mavasani@microsoft.com>

Merge 16.9p1 into master

Merge master to release/dev16.9-preview1

Merge release/dev16.8 to master

Fix for generate constructor naming bug

Fix VB invert single line code fix crash

Add UnmanagedCallersOnly runtime testing

Merge release/dev16.8 to master

Avoid cancellation exceptions when possible for expedited waits

Use GetTextSynchronously where appropriate

Ensure IServiceBroker is used on a background thread

* Records: Warn if Equals or GetHashCode is redefined, but not both

* Fix ErrorFacts.Generated.cs

* Apply feedback from @jcouv

* Fix RecordTests.cs due to new warnings - part 1

* Small fix

* Small fixes

* Fix RecordTests.cs due to new warning - part 2

* Fix formatting

* Fix RecodTests.cs due to new warning - part 3

* Fix RecodTests.cs due to new warning - part 4

* Fix RecodTests.cs due to new warning - part 5

* Fix RecodTests.cs due to new warning - part 6

* Fix an unintentional mistake

* Apply feedback

* Update src/Compilers/CSharp/Portable/Symbols/Source/SourceMemberContainerSymbol.cs

* Apply feedback

* Feedback

* UpdateXlf

* Update DiagnosticTest.cs

* Update RecordTests.cs

* Update WarningLevel to 3

* Fix test: warning level