issue #4629: add test case for group command
issue #4629: test case add a spriteInGroup instead of sprite, the sprite can not be seen now
closed #4629: fix bug for group command
closed #4629: remove unused _renderStack
Some fixes detected by xcode analyze
Merge pull request #6198 from dumganhar/xcode-analyze-fix

Some fixes detected by xcode analyze
Merge pull request #6166 from dabingnn/develop_fix_rendererBug

Develop fix renderer bug
issue #4729: Moved deprecated classes to 'cocos/deprecated' folder
issue #4729: iOS/Mac works fine
issue #4729: Compilation error fixes for linux
issue #4729: Updates tools/tolua/cocos2dx.ini
issue #4729: Updates win32/winrt xxx_headers.props
issue #4729: Moved CCNotificationCenter.h/.cpp to deprecated folder.
issue #4729: Android build works ok.
issue #4729: [ios/mac] Updates cocos2d_libs.xcodeproj
issue #4729: Move CC_INVALID_INDEX from ccCArray.h to ccTypes.h,
probably there is a better place to define this variable, but let's just
choose ccTypes.h now.
issue #4729: don't use 'using namespace std;'
issue #4729: NULL -> nullptr in constructor or setXXX(NULL)
issue #4729: include "ccTypes.h" in ccCArray.cpp for CC_INVALID_INDEX
issue #4729: Adds missing include path in cocos2dx_physics.ini