Update TCL comment:

 * We can only fix this with Tcl >= 8.4, when Tcl_SetNotifier()

src/pl/tcl/pltcl.c

@@ -2,7 +2,7 @@
  * pltcl.c		- PostgreSQL support for Tcl as
  *				  procedural language (PL)
  *
- *	  $PostgreSQL: pgsql/src/pl/tcl/pltcl.c,v 1.113 2007/09/21 00:30:49 tgl Exp $
+ *	  $PostgreSQL: pgsql/src/pl/tcl/pltcl.c,v 1.114 2007/09/28 22:33:20 momjian Exp $
  *
  **********************************************************************/
 
@@ -176,9 +176,9 @@ static void pltcl_build_tuple_argument(HeapTuple tuple, TupleDesc tupdesc,
  * from Postgres, so the notifier capabilities are initialized, but never
  * used.  Only InitNotifier and DeleteFileHandler ever seem to get called
  * within Postgres, but we implement all the functions for completeness.
- * We can only fix this with Tcl >= 8.2, when Tcl_SetNotifier() appeared.
+ * We can only fix this with Tcl >= 8.4, when Tcl_SetNotifier() appeared.
  */
-#if HAVE_TCL_VERSION(8,2)
+#if HAVE_TCL_VERSION(8,4)
 
 static ClientData
 pltcl_InitNotifier(void)
@@ -262,7 +262,7 @@ _PG_init(void)
 	Tcl_FindExecutable("");
 #endif
 
-#if HAVE_TCL_VERSION(8,2)
+#if HAVE_TCL_VERSION(8,4)
 	/*
 	 * Override the functions in the Notifier subsystem.  See comments above.
 	 */