issue #2771:  add updatePhysicsTransform to Node.
issue #2771:  change angular damping to moment. (these two have different meaning, change to the correct one)
issue #2771:  add addMass() and addMoment() to body.
issue #2771: migrate the PhysicsShape definition
issue #2771: migrate the PhysicsBody definition
issue #2771: implement some joint definition.
issue #2771: implement PhysicsBody's bit masks.
Merge branch 'develop' of https://github.com/cocos2d/cocos2d-x into iss2771_physical
issue #2771: edit some mistake when merge
Merge https://github.com/cocos2d/cocos2d-x into iss2771_physical
issue #2771: edit some include head file path
issue #2771: delete some files added by mistake.
Merge pull request #3974 from boyu0/iss2771_physical

issue 2771: physical