Enable retina by default in the GL class.
Removing internal usage of CC_CONTENT_SCALE_FACTOR().
Removing some useless scheduler changes from a couple of months ago.
Cleaning up some warnings.
Removing old CCDirector macros.
Changed the CCRANDOM macros to static inline functions. Added random functions for in and on the unit circle.
ccPhysicsBodyType -> CCPhysicsBodyType + NS_ENUM usage.
Added 2X tablet scale and stats options to setupCocos2dWithOptions:.
Merge branch 'develop-v3' of github:cocos2d/cocos2d-iphone into develop-v3