build fix for platforms that do not have default parameter support.
build fix for platforms that do not have default parameter support.

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