Issue #2445 refactor code for rendering classes
fixed #2445 refactor code for Performance
Merge branch 'develop' of Cocos2d-html5 into Iss2445_RewriteCtor

Conflicts:
	cocos2d/base_nodes/CCNode.js
	cocos2d/label_nodes/CCLabelTTF.js
	cocos2d/sprite_nodes/CCSpriteFrame.js
fixed #2445 refactor code for rendering classes to optimize performance
Fixed #2445 correct a mistake in CCScheduler.js when refactoring code for performance
Merge pull request #1047 from dingpinglv/Iss2445_RewriteCtor

Fixed #2445 refactor code for rendering classes to optimize performance