FULLPIPE: Implement Movement::~Movement()
FULLPIPE: Implement Scene::~Scene()
FULLPIPE: Implement Scene::stopAllSounds()
FULLPIPE: Removed couple of PtrList usages for code clarity
FULLPIPE: ditto for Scene::_messageQueueList
FULLPIPE: Remove unused class variable
FULLPIPE: Remove PtrList usage in gfx.cpp
FULLPIPE: Removed PtrList usage in statics.cpp
FULLPIPE: Remove now unused PtrList