issue #3353:Lua gc mechanism will make the extended attributes of lua userdata disapper
Merge branch 'develop' of https://github.com/cocos2d/cocos2d-x into toluaerror
Merge branch 'develop' of https://github.com/cocos2d/cocos2d-x into toluaerror

Conflicts:
	tools/tolua/cocos2dx.ini
issue #3353:Add the DisplayLinkDirector lua binding
Merge pull request #4601 from samuele3hu/toluaerror

issue #3353 Lua gc mechanism will make the extended attributes of lua userdata disapper