Add missing CheckGLError and whitespace tidy up this block. Fixes #1878
Merge pull request #2373 from danzel/fix-1878

Add missing CheckGLError
Remove MonoLive/MonoLiveClient and entries in protobuild. Fixes #1519
Merge pull request #2374 from danzel/fix-1519

Remove MonoLive/MonoLiveClient and entries in protobuild.
Correct handling of WeakReference so they are correctly removed from the list. Fixes #1991
Set _selfReference to null after removing it from the collection
Merge pull request #2375 from danzel/fix-1991

Correct handling of WeakReference so they are correctly removed from the list
Initial support for ANGLE platform
Fixed OpenAL and OpenTKGameWindow on ANGLE
Ignore MonoGame.Framework.Angle.* files
Add Protobuild target for ANGLE
Fixed GraphicsDevice init on ANGLE
Support SoundEffect instances on ANGLE
Merge branch 'angle' of https://github.com/thefiddler/MonoGame into angle

Conflicts:
	Build/Projects/MonoGame.Framework.definition
Merge branch 'angle' into angle-rebase