Fixes for CCRenderState copying and caching.
Don’t create cached renderstates for CCLabelTTF.
Fixed a minor issue with detecting default uniforms in CCNode.
Fix Rendering texture vertical orientation error.
Merge branch 'v3.1' into develop
Don’t add CCRenderTexture.sprite as a child.
Formatting cleanup.
Merge branch 'v3.1' into develop
update cocos2d project with effects.
Merge branch 'develop' of https://github.com/cocos2d/cocos2d-iphone into develop