+ * Revision 1.15 1998/01/13 11:10:44 mdw
+ * Add `TZ' to the list of variables to be preserved.
+ *
+ * Revision 1.14 1998/01/12 16:45:39 mdw
+ * Fix copyright date.
+ *
+ * Revision 1.13 1997/09/26 09:14:57 mdw
+ * Merged blowfish branch into trunk.
+ *