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