some fixes for windows Gl changes that broke windows phone
some fixes for windows Gl changes that broke windows phone

zmaruo/CocosSharp,hig-ag/CocosSharp,mono/cocos2d-xna,zmaruo/CocosSharp,MSylvia/CocosSharp,haithemaraissia/CocosSharp,hig-ag/CocosSharp,TukekeSoft/CocosSharp,haithemaraissia/CocosSharp,mono/cocos2d-xna,mono/CocosSharp,netonjm/CocosSharp,MSylvia/CocosSharp,TukekeSoft/CocosSharp,mono/CocosSharp,netonjm/CocosSharp