Fixed #5561: [2.x]Fix other addChild/removeChild issue in UI
Merge branch 'v2' of https://github.com/cocos2d/cocos2d-x into UI_addChild_fix
Fixed #5561: [2.x]Fix some issue
Fixed #5561: [2.x]Fix js tests compilation issue
Merge pull request #7089 from pandamicro/UI_addChild_fix

Fixed #5561: [2.x]Fix other addChild/removeChild issue in UI