tzdata: update to 2015g

Resend: typo in version in subject.

Changes affecting future time stamps

Turkey's 2015 fall-back transition is scheduled for Nov. 8, not Oct. 25.
(Thanks to Fatih.)

Norfolk moves from +1130 to +1100 on 2015-10-04 at 02:00 local time.
(Thanks to Alexander Krivenyshev.)

Fiji's 2016 fall-back transition is scheduled for January 17, not 24.
(Thanks to Ken Rylander.)

Fort Nelson, British Columbia will not fall back on 2015-11-01. It has
effectively been on MST (-0700) since it advanced its clocks on 2015-03-08.
New zone America/Fort_Nelson.  (Thanks to Matt Johnson.)

(From OE-Core master rev: fce47d3b)

Signed-off-by: Armin Kuster <akuster808@gmail.com>
Signed-off-by: Joshua Lock <joshua.lock@collabora.co.uk>