* This commit incorporates the heart of the OpenGridProtocol patch that is currently on Forge in a nice, friendly modular format.

* There are a lot of changes and this is quite experimental.  It's off by default, but you can turn it on by examining the bottom of the opensim.ini.example for the proper OpenSim.ini settings.    Remember, you still need an agent domain..  
* Furthermore, it isn't quite right when it comes to teleporting to remote regions (place_avatar)

OpenSim/Framework/IClientAPI.cs

@@ -349,6 +349,11 @@ namespace OpenSim.Framework
             set;
         }
 
+        bool SendLogoutPacketWhenClosing
+        {
+            set; 
+        } 
+
         // [Obsolete("LLClientView Specific - Circuits are unique to LLClientView")]
         uint CircuitCode { get; }
         // [Obsolete("LLClientView Specific - Replace with more bare-bones arguments.")]
@@ -741,5 +746,6 @@ namespace OpenSim.Framework
 
         void SendRegionHandle(LLUUID regoinID, ulong handle);
         void SendParcelInfo(RegionInfo info, LandData land, LLUUID parcelID, uint x, uint y);
+        void KillEndDone();
     }
 }