issue #1615 fix build.xml
issue #1615 add kazmath and shader folder to cocos2d-html5
Issue #1615: port CCConfiguration.js and port some class for WEBGL
Issue #1615 port cc.LabelTTF for WebGL
Issue #1615 MainLoop and LabelTTF is working.
Issue #1615 implement cc.RenderTexture ,cc.ProgressTime for WebGL
Merge pull request #730 from dingpinglv/Iss1615_WebGLRendering

Issue #1615 Implementing WebGL rendering