Feature #4916: SpiderMonkey v28 prebuilt for android/mac/ios added
Feature #4916: Update SpiderMonkey v28 include headers
Feature #4916: Upgrade manual bindings to v28
Feature #4916: Upgrade auto bindings to v28
Merge branch 'SMv28' of https://github.com/pandamicro/cocos2d-js into spidermonkey28