381401 Print log warning when stop attempt made with incorrect STOP.KEY

jetty-start/src/main/java/org/eclipse/jetty/start/Monitor.java

@@ -99,7 +99,10 @@ public class Monitor extends Thread
                     new LineNumberReader(new InputStreamReader(socket.getInputStream()));
                 String key=lin.readLine();
                 if (!_key.equals(key))
+                {
+                    System.err.println("Ignoring command with incorrect key");
                     continue;
+                }
                 
                 String cmd=lin.readLine();
                 Config.debug("command=" + cmd);