Issue #1615 modify cc.LabelTTF for multi-line on WebGL Mode
Issue #1615 Modify LabelAtlas and LabelBMFont for WebGL
Issue #1615 modify cc.LabelBMFont for WebGL
Issue #1615 Modify some files about Particle and Label for WebGL
Merge branch 'webgl20' of https://github.com/cocos2d/cocos2d-html5 into iss1615_WebGLRendering
Merge pull request #748 from dingpinglv/Iss1615_WebGLRendering

Issue #1615 Modify some files about Particle and Label for WebGL