Make the "All Estates" option work from the client (this makes chosen changes to all the estates that the user owns).

This applies to adding/removing estate users, groups, managers and bans.
This is the application of the AllEstates_0.5.patch from http://opensimulator.org/mantis/view.php?id=5420
Thanks very much, Snoopy!

OpenSim/Data/MSSQL/MSSQLEstateData.cs

@@ -372,6 +372,11 @@ namespace OpenSim.Data.MSSQL
             return new List<int>();
         }
 
+        public List<int> GetEstatesByOwner(UUID ownerID)
+        {
+            return new List<int>();
+        }
+
         public bool LinkRegion(UUID regionID, int estateID)
         {
             // TODO: Implementation!