* Add oar saving timeout

* If an oar save fails to get responses to all asset requests to the asset service then timeout after 60 seconds
* Timeout executes abort, since missing assets in an OAR seems bad
* This means that oar saves won't permanently hang and instead can be retried if something goes wrong with the asset service
* This is not a solution to mantis 3714.  Hopefully a fix will be along shortly since I can now consistently reproduce that problem

OpenSim/Framework/Servers/HttpServer/AsynchronousRestObjectRequester.cs

@@ -28,18 +28,22 @@
 using System;
 using System.IO;
 using System.Net;
+using System.Reflection;
 using System.Text;
 using System.Xml;
 using System.Xml.Serialization;
+using log4net;
 
 namespace OpenSim.Framework.Servers.HttpServer
 {
     public class AsynchronousRestObjectRequester
     {
+        //private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
+        
         /// <summary>
         /// Perform an asynchronous REST request.
         /// </summary>
-        /// <param name="verb"></param>
+        /// <param name="verb">GET or POST</param>
         /// <param name="requestUrl"></param>
         /// <param name="obj"></param>
         /// <param name="action"></param>
@@ -52,6 +56,8 @@ namespace OpenSim.Framework.Servers.HttpServer
         public static void MakeRequest<TRequest, TResponse>(string verb,
                 string requestUrl, TRequest obj, Action<TResponse> action)
         {
+            //m_log.DebugFormat("[ASYNC REQUEST]: Starting {0} on {1}", verb, requestUrl);
+            
             Type type = typeof (TRequest);
 
             WebRequest request = WebRequest.Create(requestUrl);
@@ -119,6 +125,8 @@ namespace OpenSim.Framework.Servers.HttpServer
                 {
                 }
 
+              //  m_log.DebugFormat("[ASYNC REQUEST]: Received {0}", deserial.ToString());
+
                 action(deserial);
             }, null);
         }