added new arg for print_tac

--- a/src/Sequents/prover.ML	Mon Dec 28 16:59:28 1998 +0100
+++ b/src/Sequents/prover.ML	Mon Dec 28 17:03:47 1998 +0100
@@ -106,7 +106,8 @@
 fun repeat_goal_tac (Pack(safes,unsafes)) = 
   let val restac  =    RESOLVE_THEN safes
       and lastrestac = RESOLVE_THEN unsafes;
-      fun gtac i = restac gtac i  ORELSE  (print_tac THEN lastrestac gtac i)
+      fun gtac i = restac gtac i  
+	           ORELSE  (print_tac "" THEN lastrestac gtac i)
   in  gtac  end;