close #3802: Add some manual lua-binding functions for the Lable and update the related test cases
Merge branch 'develop' of https://github.com/cocos2d/cocos2d-x into developPerf
Merge pull request #5139 from samuele3hu/developPerf

closed #3802:Add some manual lua-binding functions for the cocos2d::Lable and update the related test cases