Change mx-date validation to be consistent with run-support/aux-items.conf.

src/server/testsuite/leaks.0/lots-aux-items.conf

 # 
-# $Id: lots-aux-items.conf,v 1.2 1999/05/24 09:02:09 ceder Exp $
+# $Id: lots-aux-items.conf,v 1.3 1999/07/25 16:07:47 kent Exp $
 # Copyright (C) 1999  Lysator Academic Computer Association.
 # 
 # This file is part of the LysKOM server.
@@ -462,7 +462,7 @@
     author-only     = true;
     unique          = true;
     inherit         = false;
-    validate        = "[0-9][0-9][0-9][0-9][0-9][0-9] [0-9][0-9]:[0-9][0-9]:[0-9][0-9]\\( [-+][0-9][0-9][0-9][0-9]\\)?";
+    validate        = "[0-9][0-9][0-9][0-9]-[0-9][0-9]-[0-9][0-9] [0-9][0-9]:[0-9][0-9]:[0-9][0-9]\\( [-+][0-9][0-9][0-9][0-9]\\)?";
 }
 
 #