Temporary fix for batched sprites with physics bodies.
Fix the recursion in [CCNode getChildByName:recursively] and make sure it doesn't return self.
[CCNode removeChildByName:] had a backwards assertion.
Removing some old unused files.
Merge branch 'develop-v3' of github:cocos2d/cocos2d-iphone into develop-v3
Merge branch 'develop-v3' of github:cocos2d/cocos2d-iphone into develop-v3