Closed #4930: Fixed a bug of ccs.UILayer that it can't set _swallowTouche value
Merge branch 'v2.x' of https://github.com/cocos2d/cocos2d-html5 into Iss4930_UILayer
Merge pull request #1802 from dingpinglv/Iss4930_UILayer

Closed #4930: Fixed a bug of ccs.UILayer that it can't set _swallowTouche value