Merge branch 'develop' of https://github.com/cocos2d/cocos2d-x into ccx_filesystem
Merge branch 'develop' of https://github.com/cocos2d/cocos2d-x into ccx_filesystem
Merge branch 'develop' of https://github.com/cocos2d/cocos2d-x into ccx_filesystem
issue #2329: remove unneeded codes
issue #2329:not bind CCFileUtils private function
Merge pull request #3008 from minggo/ccx_filesystem

remove unneeded codes when using assets manager