Added some Alert methods to Scene , and a console command handler. So from the console to send alerts use : alert general <message> , for a instance wide message , or use alert firstname secondname <message> to send a alert to one user. (TODO: add region wide messages).

OpenSim/Region/Application/OpenSimMain.cs

@@ -361,6 +361,13 @@ namespace OpenSim
                     }
                     break;
 
+                case "alert":
+                    for (int i = 0; i < m_localWorld.Count; i++)
+                    {
+                        ((Scene)m_localWorld[i]).HandleAlertCommand(cmdparams);
+                    }
+                    break;
+
                 case "quit":
                 case "shutdown":
                     Shutdown();