Restore the functionality that was removed in r9928. This lets the load

balancer plugin work again. Create a new method, GetClientEP, to retrieve
only the EndPoint for script usage. Marked the purpose of the method
in IClientAPI.cs with a warning. Also restored the corresponding SetClientInfo
functionality.

OpenSim/Client/MXP/ClientStack/MXPClientView.cs

@@ -1417,6 +1417,11 @@ namespace OpenSim.Client.MXP.ClientStack
             Session.Send(lrm);
         }
 
+        public EndPoint GetClientEP()
+        {
+            return null;
+        }
+
         public ClientInfo GetClientInfo()
         {
             return null;