Add the ability for gods to impersonate users. For this, bit 6 needs to be

set in the target's UserFlags and the impersonator must have UserLevel 200
or above. The user can then log in using the target's name and their own
password.

OpenSim/Data/IUserAccountData.cs

@@ -50,5 +50,6 @@ namespace OpenSim.Data
         bool Store(UserAccountData data);
         bool Delete(string field, string val);
         UserAccountData[] GetUsers(UUID scopeID, string query);
+        UserAccountData[] GetUsersWhere(UUID scopeID, string where);
     }
 }