Merge pull request dotnet/coreclr#8970 from stephentoub/cwt_enum
authorStephen Toub <stoub@microsoft.com>
Wed, 18 Jan 2017 15:23:42 +0000 (10:23 -0500)
committerGitHub <noreply@github.com>
Wed, 18 Jan 2017 15:23:42 +0000 (10:23 -0500)
Add ConditionalWeakTable.Clear and IEnumerable implementation

Commit migrated from https://github.com/dotnet/coreclr/commit/396b9b9c37d0ebbb7db32a48dd556f2473b907d5


Trivial merge