pgsql: Update Windows timezone mapping from Windows 7 and 10

Update Windows timezone mapping from Windows 7 and 10

This adds a couple of new timezones that are present in the newer
versions of Windows. It also updates comments to reference UTC rather
than GMT, as this change has been made in Windows.

Michael Paquier

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/a79a68562240c58f21680483a8d2e137803bd48f

Modified Files
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src/bin/initdb/findtimezone.c | 389 ++++++++++++++++++++++++++++++------------
1 file changed, 281 insertions(+), 108 deletions(-)