1. CocosStudio adapt to cocos2d-x v3.2.
Merge branch 'v3' of https://github.com/cocos2d/cocos2d-x into v3_CocosStudioSurpport
1. add export to function CocosGUIVersion()
Merge pull request #7543 from chengstory/v3_CocosStudioSurpport

1. CocosStudio adapt to cocos2d-x v3.2.