cocos creator 2.2打包安卓的时候发现有很多warning：
In file included from C:/CocosCreator_2.2.0/resources/cocos2d-x/cocos/..\cocos/scripting/js-bindings/manual/jsb_conversions.hpp:38:
C:/CocosCreator_2.2.0/resources/cocos2d-x/cocos/..\cocos/editor-support/spine/spine.h:59:10: warning: non-portable path to file ‘<spine/extension.h>’; specified path differs in case from file name on disk [-Wnonportable-include-path]
#include <spine/Extension.h>
初步以为时引擎文件名大小写的问题，但是改过之后还是有提示，暂没有解决办法，
这个提示目前也没有影响到游戏打包发布，所以暂时先不管，后续有解决方案再补充
引擎文件路径：
C:\CocosCreator_2.2.0\resources\cocos2d-x\cocos\editor-support\spine
