patch 7.4.1426

Problem:    The "out-io" option for jobs is not implemented yet.
Solution:   Implement the "buffer" value: append job output to a buffer.

src/netbeans.c

@@ -99,8 +99,11 @@ netbeans_close(void)
     {
 	netbeans_send_disconnect();
 	if (nb_channel != NULL)
+	{
 	    /* Close the socket and remove the input handlers. */
 	    channel_close(nb_channel, TRUE);
+	    channel_clear(nb_channel);
+	}
 	nb_channel = NULL;
     }