Merge pull request #2430 from dingpinglv/Iss2429_LayerBake

Closed #2429: Fixed a bug of cc.Layer's bake function.
Fixed #2433: Fix ArmatureAnimation's setMovementEventCallFunc and setFrameEventCallFunc
Merge branch 'develop' of git://github.com/cocos2d/cocos2d-html5 into develop
Merge pull request #2434 from pandamicro/develop

Fixed #2433: Fix ArmatureAnimation's setMovementEventCallFunc and setFrameEventCallFunc
Fixed a bug of new renderer that its blend func is incorrect in Canvas Mode