Issue: Refactoring cc.Node's nodeToParentTransform for better performance.
Merge branch 'develop' of https://github.com/cocos2d/cocos2d-html5 into Iss3652_nodeToParentTransformForCanvas
Merge pull request #1482 from dingpinglv/Iss_RefactoringNode

Issue: Refactoring cc.Node's nodeToParentTransform for better performance.