Palestine observes DST starting March 29, 2013 (reworked).

Thanks to Steffen Thorsen, in
<http://mm.icann.org/pipermail/tz/2013-March/018812.html>.
An earlier version of this patch was mistaken.
Thanks to Petr Machata for reporting some of the bugs, in
<http://mm.icann.org/pipermail/tz/2013-March/018814.html>.

* asia (Palestine, Asia/Gaza, Asia/Hebron): Incorporates the latest info
from timeanddate.com about Palestine.  When combined with the previous
(incorrect) patch this incorporates the following changes for Gaza and
Hebron:

  The spring 2008 change in Gaza and Hebron was on 00:00 Mar 28, not
  00:00 Apr 1.

  The fall 2009 change in Gaza and Hebron on Sep 4 was at 01:00, not
  02:00.

  The spring 2010 change in Hebron was 00:00 Mar 26, not 00:01 Mar 27.
  timeanddate.com's table says 02:00, but the text at
  <http://www.timeanddate.com/news/time/gaza-and-west-bank-dst-2010.html>
  says 00:00.

  The spring 2011 change in Gaza was 00:01 Apr 1, not 12:01 Apr 2.
  timeanddate's table says 00:00, but the text at
  <http://www.timeanddate.com/news/time/west-bank-starts-dst-2011.html>
  says 00:01.

  The spring 2011 change in Hebron on Apr 1 was at 00:01, not 12:01.

  The fall 2011 change in Hebron on Sep 30 was at 00:00, not 03:00.

  From 2013 on, Gaza and Hebron both observe DST, with the predicted
  rules being the last Thursday in March at 24:00 to the first Friday on
  or after September 21 at 01:00.
Macquarie Island is politically part of Australia, not Antarctica.

This doesn't affect time stamps, just zone selection.
Problem reported by Tobias Conradi in
<http://mm.icann.org/pipermail/tz/2013-April/019023.html>.
* antarctica (AusAQ, ATAQ): Remove; no longer needed.
* australasia (Antarctica/Macquarie): Move here from
the 'antarctica' file.  Use Aus and AT rather than
AusAQ and ATAQ.
* zone.tab (Antarctica/Macquarie): Country code AU, not AQ.