pgsql: Update time zone data files to tzdata release 2015g.

Update time zone data files to tzdata release 2015g.

DST law changes in Cayman Islands, Fiji, Moldova, Morocco, Norfolk Island,
North Korea, Turkey, Uruguay.  New zone America/Fort_Nelson for Canadian
Northern Rockies.

Branch
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REL9_2_STABLE

Details
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http://git.postgresql.org/pg/commitdiff/fd519c1701ad509dfbe7b8698ddf5b9d11432da8

Modified Files
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src/timezone/data/africa         |   92 +++++++++++++++++++++++---------------
src/timezone/data/asia           |   29 +++++++++---
src/timezone/data/australasia    |   34 +++++++++++---
src/timezone/data/backzone       |    5 ---
src/timezone/data/europe         |   78 ++++++++++++++++++++------------
src/timezone/data/iso3166.tab    |   11 +++--
src/timezone/data/leapseconds    |    4 +-
src/timezone/data/northamerica   |   54 +++++++++++++++++++---
src/timezone/data/southamerica   |   45 ++++++++++++-------
src/timezone/data/zone.tab       |    5 ++-
src/timezone/data/zone1970.tab   |    8 ++--
src/timezone/known_abbrevs.txt   |    3 +-
src/timezone/tznames/America.txt |    2 +-
src/timezone/tznames/Asia.txt    |    4 +-
src/timezone/tznames/Default     |    4 +-
src/timezone/tznames/Pacific.txt |    2 +-
16 files changed, 256 insertions(+), 124 deletions(-)