Issue #4580: Add necessary GL constants in JSB
Issue #4741: Add cc.rand in JSB
Fixed #4742: SAXParser renamed to PlistParser in JSB
Merge branch 'master' of https://github.com/cocos2d/cocos2d-js
Refactor #4365: Use undefined check in cc.MenuItemSprite.prototype._ctor
Merge pull request #244 from pandamicro/master

Fixed #4742: SAXParser renamed to PlistParser in JSB