CLS Compliance
Adding the CLSCompliant attribute allows for easier use of the assembly with all .NET languages.
CLSCompliant(true) attribute added to assembly.
CLSCompliant(false) added to fields, properties and methods that are not CLS compliant.
LzxDecoder class is no longer public.

Built with Windows, WindowsGL, Windows8, WindowsPhone and Linux.
Merge branch 'develop' of https://github.com/mono/MonoGame into clscompliant
Fix PSM build.
Found more CLSCompliant issues in Android.
GraphicsExtensions is no longer public as it is for internal use by MonoGame.
GraphicsExtensions still needs to remain public for now because the content pipeline uses it.
Merge pull request #1725 from slygamer/clscompliant

CLS Compliance