Added creator info across the board -- TaskInventoryItems and InventoryItems themselves. Tested. Seems to be working, main tests pass. Nothing done for IARs or HG transfers yet -- this only works for OARs for the time being.

New migration in inventory table in order to make CreatorID varchar(255).

OpenSim/Region/Framework/Scenes/SceneObjectPart.cs

@@ -449,12 +449,17 @@ namespace OpenSim.Region.Framework.Scenes
             }
         }
 
-        public string CreatorData
+        public string CreatorData // = <profile url>;<name>
         {
             get { return m_creatorData; }
             set { m_creatorData = value; }
         }
 
+        /// <summary>
+        /// Used by the DB layer to retrieve / store the entire user identification.
+        /// The identification can either be a simple UUID or a string of the form
+        /// uuid[;profile_url[;name]]
+        /// </summary>
         public string CreatorIdentification
         {
             get