Update LuaMinXmlHttpRequest.h/.cpp
Merge branch 'v3' of https://github.com/cocos2d/cocos2d-x into v3_new_spine
Remove some useless rename functions in the cocos2dx.ini and cocos2dx_studio.ini
Fix the bug that callbacks aren’t triggered when response failed
Merge pull request #8868 from samuele3hu/v3_new_spine

Update LuaMinXmlHttpRequest and remove some useless rename functions in the cocos2dx.ini and cocos2dx_studio.ini