Fix bug in batch daemon that was casuing it not to try more than once.

tbsetup/batch_daemon.in

@@ -198,7 +198,7 @@ while (1) {
 
 	$query_result = 
 	    DBQuery("update experiments set ".
-		    "       expt_locked=now(), ".
+		    "       expt_locked=now(),expt_start=now() ".
 		    "       batchstate='$BSTATE_LOCKED' ".
 		    "where eid='$eid' and pid='$pid'");