Merge pull request #234 from xingsenma/Cocostudio

issue #2828 change cocostudio test Directory to mainMenu
fixed #3151: removing CCSet.js from build.xml for Performance
Merge pull request #235 from dingpinglv/Iss3151_ReduceDependency

fixed #3151: removing CCSet.js from build.xml for Performance
Issue #3192: fix some bugs for releasing v2.2.1
Issue #3192: reset render mode value to default value.
Merge pull request #238 from dingpinglv/Iss3192_FixBugsForReleaseV2.2.1

Issue #3192: fix some bugs for releasing v2.2.1
issue #2828 update cocostudio test
Merge branch 'master' of https://github.com/cocos2d/cocos2d-js-tests into Cocostudio