issue #1753: Upgrading SpiderMonkey to Firefox19.0, iOS works ok.
Updated the submodule reference of cxx-generator.
issue #1753: Win32 works ok.
fixed #1753: Android works ok now.
Updated cocos2d-js-tests.
fixed #1753: Adding ccUTF8.h/.cpp for MAC, LINUX and MARMALADE port.
Merge pull request #2055 from dumganhar/iss1753-spidermonkey-19

fixed #1753: Upgrading SpiderMonkey to Firefox19.0.