Selection of the shader precision in EffectProcessor.
Add support for HalfVector and HalfSingle Rendertargets.
Add two virtual functions in game.cs to provide hookup for profiling.
Merge branch 'InfiniteFlight' of https://github.com/flyingdevelopmentstudio/MonoGame into InfiniteFlight

Conflicts:
	MonoGame.Framework/Graphics/GraphicsExtensions.cs
Rollback vertexbuffer getdata fix.
Merge pull request #1 from rgba8/InfiniteFlight

MonoGame improvements.