Make sure the position of a loggin-in agent is within region boundaries since

out of bounds positions cause a rejection of the login.

OpenSim/Region/Framework/Scenes/Scene.cs

@@ -3886,6 +3886,15 @@ namespace OpenSim.Region.Framework.Scenes
 
         public bool TestLandRestrictions(UUID agentID, out string reason, ref float posX, ref float posY)
         {
+            if (posX < 0)
+                posX = 0;
+            else if (posX >= 256)
+                posX = 255.999f;
+            if (posY < 0)
+                posY = 0;
+            else if (posY >= 256)
+                posY = 255.999f;
+
             reason = String.Empty;
             if (Permissions.IsGod(agentID))
                 return true;

OpenSim/Services/Connectors/Simulation/SimulationServiceConnector.cs

@@ -86,6 +86,7 @@ namespace OpenSim.Services.Connectors.Simulation
             reason = String.Empty;
             if (destination == null)
             {
+                reason = "Destination not found";
                 m_log.Debug("[REMOTE SIMULATION CONNECTOR]: Given destination is null");
                 return false;
             }