Update to tzdata 2015c

  Changes affecting future time stamps

    Egypt's spring-forward transition is at 24:00 on April's last Thursday,
    not 00:00 on April's last Friday.  2015's transition will therefore be on
    Thursday, April 30 at 24:00, not Friday, April 24 at 00:00.  Similar fixes
    apply to 2026, 2037, 2043, etc.  (Thanks to Steffen Thorsen.)

  Changes affecting past time stamps

    The following changes affect some pre-1991 Chile-related time stamps
    in America/Santiago, Antarctica/Palmer, and Pacific/Easter.

      The 1910 transition was January 10, not January 1.

      The 1918 transition was September 10, not September 1.

      The UTC-4 time observed from 1932 to 1942 is now considered to be
      standard time, not year-round DST.

      Santiago observed DST (UTC-3) from 1946-07-15 through 1946-08-31,
      then reverted to standard time, then switched its time zone to
      UTC-5 on 1947-04-01.

      Assume transitions before 1968 were at 00:00, since we have no data
      saying otherwise.

      The spring 1988 transition was 1988-10-09, not 1988-10-02.
      The fall 1990 transition was 1990-03-11, not 1990-03-18.

      Assume no UTC offset change for Pacific/Easter on 1890-01-01,
      and omit all transitions on Pacific/Easter from 1942 through 1946
      since we have no data suggesting that they existed.

    One more zone has been turned into a link, as it differed
    from an existing zone only for older time stamps.  As usual,
    this change affects UTC offsets in pre-1970 time stamps only.
    The zone's old contents have been moved to the 'backzone' file.
    The affected zone is America/Montreal.

Bug: 20287125
(cherry-picked from commit d2177404e28290064e087ecb2655e5fdcb9057e5)

Change-Id: I55224cc63b314a8e4c2f1c83f8bc4921316c8e4d
diff --git a/libc/zoneinfo/tzdata b/libc/zoneinfo/tzdata
index 3661b68..cbb22bc 100644
--- a/libc/zoneinfo/tzdata
+++ b/libc/zoneinfo/tzdata
Binary files differ