Sync zoneinfo database with tzdata2016d from ftp://ftp.iana.org/tz/releases

Sync zoneinfo database with tzdata2016d from ftp://ftp.iana.org/tz/releases

* America/Caracas switches from -0430 to -04 on 2016-05-01 at 02:30.
    (Thanks to Alexander Krivenyshev for the heads-up.)

* Asia/Magadan switched from +10 to +11 on 2016-04-24 at 02:00.
    (Thanks to Alexander Krivenyshev and Matt Johnson.)

* New zone Asia/Tomsk, split off from Asia/Novosibirsk.  It covers
    Tomsk Oblast, Russia, which switches from +06 to +07 on 2016-05-29
    at 02:00.  (Thanks to Stepan Golosunov.)

* New zone Europe/Kirov, split off from Europe/Volgograd.  It covers
    Kirov Oblast, Russia, which switched from +04/+05 to +03/+04 on
    1989-03-26 at 02:00, roughly a year after Europe/Volgograd made
    the same change.  (Thanks to Stepan Golosunov.)

* Russia and nearby locations had daylight-saving transitions on
    1992-03-29 at 02:00 and 1992-09-27 at 03:00, instead of on
    1992-03-28 at 23:00 and 1992-09-26 at 23:00.  (Thanks to Stepan
    Golosunov.)

* Many corrections to historical time in Kazakhstan from 1991
    through 2005.  (Thanks to Stepan Golosunov.)  Replace Kazakhstan's
    invented time zone abbreviations with numeric abbreviations.

* Mention Internet RFCs 7808 (TZDIST) and 7809 (CalDAV time zone references).