bug or feature? mktime sets tzname to historical zone names

[Robert Elz]

    Date:        Sun, 17 Jun 2001 22:20:56 -0700 (PDT)
    From:        Paul Eggert <eggert at twinsun.com>
    Message-ID:  <200106180520.f5I5KuO24701 at green-office.twinsun.com>

  | For non-POSIX-style settings, I would say that only the one member of
  | tzname is defined; the other member is not.  But this should probably
  | be documented somewhere....

Actually, tzname[] is a crick of shot, and should be undocumented
everywhere...

kre