Update timezone data to 2017b

IANA changes:

  Briefly: Haiti has resumed DST.

  Changes to past and future time stamps

    Haiti resumed observance of DST in 2017.  (Thanks to Steffen Thorsen.)

  Changes to past time stamps

    Liberia changed from -004430 to +00 on 1972-01-07, not 1972-05-01.

    Use "MMT" to abbreviate Liberia's time zone before 1972, as "-004430"
    is one byte over the POSIX limit.  (Problem reported by Derick Rethans.)

Bug: 36470257
Test: CtsLibcoreTestCases / CtsBionicTestCases
Change-Id: I5a8ffb60232410d88ffa67c7702dd234ff05f61d