Root agent retrieval via http/REST. This is a pull, the caller gets the agent. This is not used by the regions yet, but it may be a better alternative to transfer agents even when that is done by the regions. The data is still trivial; soon it will have attachments, scripts and script state. Also, authorization tokens still to come. Serialization using OSD/json, as the other methods.

OpenSim/Region/Framework/Interfaces/IInterregionComms.cs

@@ -56,6 +56,8 @@ namespace OpenSim.Region.Framework.Interfaces
         /// <returns></returns>
         bool SendChildAgentUpdate(ulong regionHandle, AgentPosition data);
 
+        bool SendRetrieveRootAgent(ulong regionHandle, UUID id, out IAgentData agent);
+
         /// <summary>
         /// Message from receiving region to departing region, telling it got contacted by the client.
         /// When sent over REST, it invokes the opaque uri.