Sync zoneinfo database with tzdata2009h from elsie.

Sync zoneinfo database with tzdata2009h from elsie.

README:         8.2  -> 8.3
Theory:         8.2  -> 8.3
africa:         8.19 -> 8.21
antarctica:     8.4  -> 8.5
asia:           8.30 -> 8.32
australasia:    8.9  -> 8.11
backward:       8.7  -> 8.8
etcetera:       8.1  -> 8.2
europe:         8.20 -> 8.21
factory:        8.1  -> 8.2
iso3166.tab:    8.5  -> 8.6
leapseconds:    8.7  -> 8.8
northamerica:   8.27 -> 8.28
southamerica:   8.34 -> 8.36
systemv:        8.1  -> 8.2
zone.tab:       8.26 -> 8.28

From Arthur David Olson's comments:

* "Public domain" statements are added to a number of files.

* Instances of "=3D" are changed to "=" in the "africa"
  and "southamerica" files.

* The start of DST in Jordan from 2002 forward is changed from
  0:00 on the last Friday of the month to 24:00 on the last Thursday.

* Four sets of latitute/longitude are corrected in the "zone.tab" file
  (with thanks to Marc Wick).

* Commentary is added to the "australasia" file regarding DST in
  South Australia (no changes to the rules).