Changes associated with the tzdb 2019a update

Changes associated with the tzdb 2019a update.

Upstream summary:

  Briefly:
     Palestine "springs forward" on 2019-03-30 instead of 2019-03-23.
     Metlakatla "fell back" to rejoin Alaska Time on 2019-01-20 at 02:00.

   Changes to past and future timestamps

     Palestine will not start DST until 2019-03-30, instead of 2019-03-23 as
     previously predicted.  Adjust our prediction by guessing that spring
     transitions will be between 24 and 30 March, which matches recent practice
     since 2016.  (Thanks to Even Scharning and Tim Parenti.)

     Metlakatla ended its observance of Pacific standard time,
     rejoining Alaska Time, on 2019-01-20 at 02:00.  (Thanks to Ryan
     Stanley and Tim Parenti.)

   Changes to past timestamps

     Israel observed DST in 1980 (08-02/09-13) and 1984 (05-05/08-25).
     (Thanks to Alois Treindl and Isaac Starkman.)

This commit is the result of applying external/cldr, external/icu
changes, running system/timezone/download-iana-data.py, making small
changes to countryzones.txt and then running
system/timezone/update-tzdata.py.

Testing:
Ran CTS modules on a taimen:
CtsLibcoreTestCases
CtsLibcoreOjTestCases
CtsIcuTestCases
CtsBionicTestCases
CtsTextTestCases

Bug: 129319176
Test: See above
Change-Id: I0f85171aa1329cd484ba0cd817cec667e5166628
18 files changed