preliminary inter region communications (between regions in different instances) now works, so child agents and border crossings (and teleporting) now work.

The .net remoting is still very basic: we need security sinks added.
And we really need the OGS 2 protocol as soon as possible.

OpenSim/Framework/General/Types/AgentCiruitData.cs

@@ -26,9 +26,11 @@
 * 
 */
 using libsecondlife;
+using System;
 
 namespace OpenSim.Framework.Types
 {
+    [Serializable]
     public class AgentCircuitData
     {
         public AgentCircuitData() { }

OpenSim/Framework/General/Types/RegionInfo.cs

@@ -130,6 +130,7 @@ namespace OpenSim.Framework.Types
                 m_remotingPort = value;
             }
         }
+        public string RemotingAddress;
 
         public string DataStore = "";
         public bool isSandbox = false;