issue #2771:  fix physics test  CC_USE_PHYSICS definition
issue #2771:  add assert to joint
Fix: on android, Device::setAccelerometerInterval will causes dead loop
issue #2771:  add some method implements with box2d in PhysicsWorld
upgrade box2d from 2.2.1 to 2.3.0
fix box2d compile error in ndk
issue #2771:  refactor PhysicsWorld and PhysicsWorldInfo
issue #2771: refactor some functions and delete PHYSICS_INFINITY macro.
issue #2771: delete all the box2d implementation in physics parts.
issue #2771: fix compile errors
issue #2771: edit android.mk, CMakeLists.txt, change PHYSICS_CONTACT_POINT_MAX to PhysicsContactData:POINT_MAX
add helper funcion to invoke a function in gl thread
issue #2771: fix vs compile errors, change project setting
don't create a pool, since it doesn't invoke any iOS dependent codes
Merge branch 'develop' of https://github.com/cocos2d/cocos2d-x into iss2771_physical
issue #2771:remove unneeded include “ccConfig.h”
use ThreadHelper::runOnGLThread() in AssetsManager
Merge pull request #4403 from boyu0/iss2771_physical

[ci skip]Iss2771 physical
[AUTO] : updating submodule reference to latest autogenerated bindings
Merge pull request #4404 from CocosRobot/updategeneratedsubmodule_1385608475

[ci skip][AUTO] : updating submodule reference to latest autogenerated bindings