Sync zoneinfo database with tzdata2014b from ftp://ftp.iana.org/tz/releases

* africa: Morocco's 2014 DST start will be as predicted. (Thanks to
    Sebastien Willemijns.)

* australasia: Add comments about Johnston Island time in the 1960s.
    (Thanks to Lyle McElhaney.)

* antarctica: New entry for Troll station, Antarctica. (Thanks to
    Paul-Inge Flakstad and Bengt-Inge Larsson.) This is currently an
    approximation; a better version will require zic and localtime
    fixes. Also the NZAQ rules - which are never used - have been
    removed.

* europe: Crimea switches to Moscow time on 2014-03-30 at 02:00 local
    time. (Thanks to Alexander Krivenyshev.)
    Move its zone.tab entry from UA to RU.