cocos2d/cocos2d-x — pull request #644 by minggo (2011-12-28 06:54:05+00:00)
Title: add functions in CCTouchDelegate for subclass to retain/release when dynamic_cast() faild

1. Also remove some unneeded functions.
2. Declare member variable as not virtual
3. Make CCTextureProtocol & CCRGBAProtocol as pure abstract class