Fixed anchor point bugs for CCRenderTexture and CCEffectNode, correctly implemented setContentSize so that CCRenderTexture and CCEffectNode behave like any CCNode. This should help fix weird collision check issues that I was running into when making a demo.
Fixed anchoring bugs in CCRenderTexture, now CCRenderTexture supports setContentSize and will also behave like a CCNode in regards to anchorPoints.
Merge branch 'develop' of github.com:osinoleg/cocos2d-iphone into develop

Conflicts:
	cocos2d/CCEffectNode.m