WipeItemsCommand.h

[needs] engine update
[changed] removed SceneObject::insertToZone/removeFromZone, insertToZone now becomes Zone::transferObject and removeFromZone is now SceneObject::destroyObjectFromWorld
[changed] SceneObject::addObject renamed to SceneObject::transferObject, transferObject now removes from the old parent and adds to the new parent, no need to call removeObject
[changed] Zone acts now as a container for objects with no parent. Objects are either in zone or in a parent that are in zone.
[fixed?] Loading in buildings
[changed] moved SceneObject::GAMEOBJECT to SceneObjectType
[added] running ./core3 clean will truncate all current char data and mysql tables
[removed] QuadTree from BuildingObject, using cells to load in range objects now
[changed] moved SceneObject::parent to QuadTreeEntry
[fixed] QT not destroying far objects in some circumstances