* MonoGlobalAssemblyCache: actually read assembly names from assembly files

new AssemblyName(path) becomes AssemblyName.GetAssemblyName(path)

This fixes the GlobalAssemblyCacheTests when running on Mono.

cf. https://github.com/dotnet/roslyn/pull/39369#issuecomment-545970358

* MonoGlobalAssemblyCache: faster resolves + resolve Facades

1. Don't special case mscorlib.dll - we already will have a reference
   to it, and the changes in (2) allow it to still resolve. Remove
   GetCorlibPaths.

2. Have GetCacAssemblyPaths bail early if it finds an assembly that
   lives alongside mscorlib.dll, or in the Facades directory. This
   These assemblies in Mono are considered "core" and will always
   symlink directly to the GAC. Resolve facade assemblies as well now.
   The Mono distribution of csi has shipped with a response file that
   explicitly referenced Facades/netstandard.dll and
   Facades/System.Runtime.dll and this change obsoletes that. As a
   consequence, local builds of csi.exe now work.

3. Minor perf work around converting a public key token to a string by
   deferring that conversion until only necessary, and use byte.ToString
   instead of AppendFormat. Also use a PooledStringBuilder.

4. Tuple -> ValueTuple

* MetadataShadowwCopyProviderTests: run on Mono

Use global properties to iterate over TFMs in MSBuildWorkspace

Add InternalsVisibleTo to the VSMac Razor assembly.

This test explores potentially ambiguity between lambdas and local
functions where the start of the local function or lambda is `await`.
This turns out not to be a problem because await is followed by an
expression with unary precedence, which is higher than lambda
precedence.

Fixes #10388

This ensures that conditions based on the TFM work correctly in MSBuild files
which are included early, like in NuGet props files for instance.

Fixes #39724

- Microsoft.DotNet.Arcade.Sdk - 5.0.0-beta.19558.11

This is causing a race where we try to submit multiple changes to the dotnet/versions repository one after the other. The changes need to be fast-forward, but if you submit changes very quickly, you could get the HEAD of the old build right after submitting, meaning that the commit would be based on the old content. The failure to commit a fast-forward merge is failing the build.

dotnet/arcade#4320 addresses the need to retry if a fast-forward fails.

Update HideBaseCodeFixProvider to follow preferred modifier order

Prevent removing all whitespace when formatting unrecognized whitespace charactes

Generate proper nullability annotation for IEquatable.Equals

* Update dependencies from https://github.com/dotnet/arcade build 20191106.10

- Microsoft.DotNet.Arcade.Sdk - 5.0.0-beta.19556.10

* Update dependencies from https://github.com/dotnet/arcade build 20191107.20

- Microsoft.DotNet.Arcade.Sdk - 5.0.0-beta.19557.20

Co-Authored-By: NSam Harwell <sam@tunnelvisionlabs.com>

When converting to LINQ calls, omit .Select(x => x) when possible.

Merge release/dev16.4 to master

Show QuickInfo on references to indexers

Completion for unimported extension methods

Show nullable annotations in the Change Signature dialog 

Respect RunAnalyzers and RunCodeAnalysisDuringLiveAnalysis project pr…

Fixes #38283

Completion: VSMac TypeScript completion doesn't commit with Enter

Reorder Suppression fixes to be above Configuration fixes in the lightbulb

Upgrade ICSharpCode.Decompiler to 5.0.2.5153

- Microsoft.DotNet.Arcade.Sdk - 5.0.0-beta.19555.7

Merge release/dev16.4 to master

* Update dependencies from https://github.com/dotnet/arcade build 20191004.2

- Microsoft.DotNet.Arcade.Sdk - 5.0.0-beta.19504.2

* Update dependencies from https://github.com/dotnet/arcade build 20191005.1

- Microsoft.DotNet.Arcade.Sdk - 5.0.0-beta.19505.1

* Update dependencies from https://github.com/dotnet/arcade build 20191006.1

- Microsoft.DotNet.Arcade.Sdk - 5.0.0-beta.19506.1

* Update dependencies from https://github.com/dotnet/arcade build 20191009.5

- Microsoft.DotNet.Arcade.Sdk - 5.0.0-beta.19509.5

* Update dependencies from https://github.com/dotnet/arcade build 20191010.4

- Microsoft.DotNet.Arcade.Sdk - 5.0.0-beta.19510.4

* Update dependencies from https://github.com/dotnet/arcade build 20191011.1

- Microsoft.DotNet.Arcade.Sdk - 5.0.0-beta.19511.1

* Update dependencies from https://github.com/dotnet/arcade build 20191015.1

- Microsoft.DotNet.Arcade.Sdk - 5.0.0-beta.19515.1

* Update dependencies from https://github.com/dotnet/arcade build 20191015.2

- Microsoft.DotNet.Arcade.Sdk - 5.0.0-beta.19515.2

* Update dependencies from https://github.com/dotnet/arcade build 20191017.8

- Microsoft.DotNet.Arcade.Sdk - 5.0.0-beta.19517.8

* Update dependencies from https://github.com/dotnet/arcade build 20191018.2

- Microsoft.DotNet.Arcade.Sdk - 5.0.0-beta.19518.2

* Update dependencies from https://github.com/dotnet/arcade build 20191021.4

- Microsoft.DotNet.Arcade.Sdk - 5.0.0-beta.19521.4

* Update dependencies from https://github.com/dotnet/arcade build 20191022.8

- Microsoft.DotNet.Arcade.Sdk - 5.0.0-beta.19522.8

* Update dependencies from https://github.com/dotnet/arcade build 20191023.3

- Microsoft.DotNet.Arcade.Sdk - 5.0.0-beta.19523.3

* Update dependencies from https://github.com/dotnet/arcade build 20191024.2

- Microsoft.DotNet.Arcade.Sdk - 5.0.0-beta.19524.2

* Update dependencies from https://github.com/dotnet/arcade build 20191025.2

- Microsoft.DotNet.Arcade.Sdk - 5.0.0-beta.19525.2

* Update dependencies from https://github.com/dotnet/arcade build 20191026.1

- Microsoft.DotNet.Arcade.Sdk - 5.0.0-beta.19526.1

* Update dependencies from https://github.com/dotnet/arcade build 20191027.3

- Microsoft.DotNet.Arcade.Sdk - 5.0.0-beta.19527.3

* Update dependencies from https://github.com/dotnet/arcade build 20191028.5

- Microsoft.DotNet.Arcade.Sdk - 5.0.0-beta.19528.5

* Update dependencies from https://github.com/dotnet/arcade build 20191029.9

- Microsoft.DotNet.Arcade.Sdk - 5.0.0-beta.19529.9

* Update dependencies from https://github.com/dotnet/arcade build 20191030.15

- Microsoft.DotNet.Arcade.Sdk - 5.0.0-beta.19530.15

* Update dependencies from https://github.com/dotnet/arcade build 20191031.14

- Microsoft.DotNet.Arcade.Sdk - 5.0.0-beta.19531.14

* Update dependencies from https://github.com/dotnet/arcade build 20191101.3

- Microsoft.DotNet.Arcade.Sdk - 5.0.0-beta.19551.3

* Update dependencies from https://github.com/dotnet/arcade build 20191102.1

- Microsoft.DotNet.Arcade.Sdk - 5.0.0-beta.19552.1

* Update dependencies from https://github.com/dotnet/arcade build 20191104.3

- Microsoft.DotNet.Arcade.Sdk - 5.0.0-beta.19554.3

* Work around dotnet/wpf#1718 by not embedding untracked source

* Pack Content for analyzer packages