Upgrade to tzdata2014b.

From the release notes:

  Changes affecting near-future time stamps

    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.

    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 the zic and localtime
    fixes mentioned [in the full release notes], and the plan is to wait
    for a while until at least the zic fixes propagate.

Change-Id: Ib00f6cbc7b92e26822792b45e53a5f5381e0f6bf
(cherry picked from commit fe6adbad196504650c555bb4ae90dc969b3403e6)
Upgrade to tzdata2014c.

From the release notes:

  Changes affecting near-future time stamps

    Egypt observes DST starting 2014-05-15 at 24:00.
    (Thanks to Ahmad El-Dardiry and Gunther Vermier.)
    Details have not been announced, except that DST will not be
    observed during Ramadan.  Guess that DST will stop during the same
    Ramadan dates as Morocco, and that Egypt's future spring and fall
    transitions will be the same as 2010 when it last observed DST,
    namely April's last Friday at 00:00 to September's last Thursday at
    23:00 standard time.  Also, guess that Ramadan transitions will be
    at 00:00 standard time.

Change-Id: I6a20cae02a314871acbd52cb90fcbebd37625810
(cherry picked from commit 121cb5f4a7073a2994089fd775e86b8a391e009c)