…tch the new update
…ndings into StephaneDelcroix-fixcocos2d Conflicts: chipmunk/binding/Makefile
Keep a reference of the managed object in the native UserData. Allows subclasses of Shape and Constraint returned by callbacks to be the right one instead of parent's. Allow also user to subclass Bodies, Constraints, Shapes. Arbiters are still sealed: we don't control their livetimes, so if we keep a referenced to the managed object, we don't know at which point in time to clear it.