add GetUsersNames(string[] ids) to UserManagement. Make GetDisplayNames cap use it so several IDs are handle on a single call. Since there is no grid side suport, no much gain still

OpenSim/Capabilities/Handlers/GetDisplayNames/GetDisplayNamesServerConnector.cs

@@ -61,8 +61,6 @@ namespace OpenSim.Capabilities.Handlers
 
             if (m_UserManagement == null)
                 throw new Exception(String.Format("Failed to load UserManagement from {0}; config is {1}", umService, m_ConfigName));
-
-            string rurl = serverConfig.GetString("GetTextureRedirectURL");
             
             server.AddStreamHandler(
                 new GetDisplayNamesHandler("/CAPS/agents/", m_UserManagement, "GetDisplayNames", null));