Log Message:
Add a pseudo-pkg which copies the zone.tab file which comes with
the tzdata distribution but is not installed in NetBSD to
/usr/share/zoneinfo.
Sorry for that hack, but it looks still better for me than the
alternatives which are (a) hacking ugly code in evolution or
(b) duplication of the whole zoneinfo tree into pkgsrc.
This is NetBSD only for now; while it might be useful for other
platforms which don't install zone.tab, the /usr/share/zoneinfo path
is hardwired and needs to be verified individually.