closed #3857: Mac and iOS Simulator should also use SpiderMonkey which was built in RELEASE mode.
For more details why I did this, please refer to http://www.cocos2d-x.org/issues/3857.
Merge pull request #5228 from dumganhar/iss3857-sp-release

closed #3857: Mac and iOS Simulator should also use SpiderMonkey which was built in RELEASE mode.