Issue #3588: refactoring Array clear function
Merge branch 'develop' of https://github.com/cocos2d/cocos2d-html5 into Iss3588_RefactorArrayClear
Issue #3588: refactoring Array clear function for performance.
Merge branch 'develop' of https://github.com/cocos2d/cocos2d-html5 into Iss3588_RefactorArrayClear
Issue #3588: refactor Array clear function
Closed #3588: Refactoring Array clear function
Merge branch 'develop' of https://github.com/cocos2d/cocos2d-html5 into Iss3588_RefactorArrayClear
Merge pull request #1469 from dingpinglv/Iss3588_RefactorArrayClear

Closed #3588: Refactoring Array clear function