Fixing small bug with CCClippingNode:
Fixing small bug with CCClippingNode:

* need to update stencil scene when clipping node scene changes

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