Issue #4730: fixed an error in CCBoot.js when using Google closure compiler advanced mode
Merge branch 'develop-3.0' of https://github.com/cocos2d/cocos2d-html5 into Iss4730_IEMouse

Conflicts:
	CCBoot.js
Merge branch 'develop-3.0' of https://github.com/cocos2d/cocos2d-html5 into Iss4730_IEMouse
Closed #4730: fixed a bug of inputManager's touch event in IE browser
Issue #4608: Fixed a bug that CCClippingNode.js _super is undefined
Merge pull request #1754 from VisualSJ/develop-3.0

Issue #4608: Fixed a bug that CCClippingNode.js _super is undefined
Merge pull request #1753 from pandamicro/develop-3.0

Issue #4580: Add necessary GL constants in H5
Merge pull request #1755 from dingpinglv/Iss4730_IEMouse

Closed #4730: fixed a bug of inputManager's touch event in IE browser
REFixed #4706: Fixed IE incompatible issue with __lookupGetter__