Closed #5879: Fixed a bug of cc.Menu that its item's touch priority is different to cc.eventManager
Merge branch 'develop' of git://github.com/cocos2d/cocos2d-html5 into Iss5879_ccMenu
Merge pull request #2209 from dingpinglv/Iss5879_ccMenu

Closed #5879: Fixed a bug of cc.Menu that its item's touch priority is different to cc.eventManager