Merge pull request #6212 from samuele3hu/develop_fix

Add deprecated support for `Label::create` and new lua binding for `Label:createWithTTF`
closed #4744: EventDispatcher::setDirtyForNode doesn't consider node's children
closed #4744: Adds test for issue4744.
Merge pull request #6214 from dumganhar/iss4744-set-dirty-for-node

closed #4744: EventDispatcher::setDirtyForNode doesn't consider node's children
Merge branch 'develop' of https://github.com/cocos2d/cocos2d-x into develop_fix