Update CCNode.cpp

removeAllChildrenWithCleanup() not remove PhysicsBody
Rename 'tests' folder to 'samples', adds 'cpp-tests' folder.
Adds empty folder, 'cpp-hello', 'lua-tests'.
Adds lua-hello folder.
Renames 'cocos2d_tests.xcodeproj' to 'cocos2d_samples.xcodeproj'
Deletes xcode xcschemes temporarily.
cocos2d_tests -> cocos2d_samples
Merge pull request #5633 from huangml/patch-1

closed #4319: Node::removeAllChildrenWithCleanup() does not remove PhysicsBody.
Update AUTHORS [ci skip]
Updates win32 project configuration.
Compilation error fixes for Linux and Android.
Re-add xcode 'scheme' files.
[jenkins] Don't gen jsb bindings.
[travis ci] Build testcpp only.
[jenkins ci] Updates jenkins script
Merge pull request #5642 from dumganhar/re-add-lua

Refactor folder structure, move 'tests' to 'samples/cpp-tests'
[AUTO][ci skip]: updating cocos2dx_files.json
Merge pull request #5644 from CocosRobot/update_cocosfiles_1394431347

[AUTO][ci skip]: updating cocos2dx_files.json