Add bit extend module
Fix the OpenGLTest display bugs.
Fix the TMXOrthoFlipRunTimeTest bugs.
Delete SceneEditorTest from ExtensionTest and add related binary loading to CocoStudioSceneTest
Merge branch 'v3' of https://github.com/cocos2d/cocos2d-x into v3_hot_fix
Update the TextureAsyncTest
Merge branch 'v3' of https://github.com/cocos2d/cocos2d-x into v3_hot_fix
Merge pull request #7444 from samuele3hu/v3_hot_fix

Add bit extend module and fix some bugs found in test