* Moved -udpatedPropertiesByUUID to COObjectGraphContext+Debugging.h

* Restored documentation on -updatedPropertiesByUUID, -insertedObjects, 
-updatedObjects and -changedObjects

* Included COObjectGraphContext+Debugging.h as public header


git-svn-id: http://svn.gna.org/svn/etoile/trunk/Etoile/Frameworks/CoreObject@10088 7b3f36aa-e6db-49c1-8b4c-66eac1997e64