pgsql: Update timezone data files to release 2006k of the zic database.

Log Message:
-----------
Update timezone data files to release 2006k of the zic database.

Modified Files:
--------------
pgsql/src/timezone/data:
africa (r1.2 -> r1.3)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/timezone/data/africa.diff?r1=1.2&r2=1.3)
antarctica (r1.2 -> r1.3)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/timezone/data/antarctica.diff?r1=1.2&r2=1.3)
asia (r1.3 -> r1.4)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/timezone/data/asia.diff?r1=1.3&r2=1.4)
australasia (r1.2 -> r1.3)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/timezone/data/australasia.diff?r1=1.2&r2=1.3)
backward (r1.3 -> r1.4)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/timezone/data/backward.diff?r1=1.3&r2=1.4)
etcetera (r1.3 -> r1.4)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/timezone/data/etcetera.diff?r1=1.3&r2=1.4)
europe (r1.4 -> r1.5)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/timezone/data/europe.diff?r1=1.4&r2=1.5)
factory (r1.2 -> r1.3)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/timezone/data/factory.diff?r1=1.2&r2=1.3)
iso3166.tab (r1.4 -> r1.5)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/timezone/data/iso3166.tab.diff?r1=1.4&r2=1.5)
leapseconds (r1.4 -> r1.5)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/timezone/data/leapseconds.diff?r1=1.4&r2=1.5)
northamerica (r1.3 -> r1.4)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/timezone/data/northamerica.diff?r1=1.3&r2=1.4)
pacificnew (r1.1 -> r1.2)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/timezone/data/pacificnew.diff?r1=1.1&r2=1.2)
solar87 (r1.2 -> r1.3)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/timezone/data/solar87.diff?r1=1.2&r2=1.3)
solar88 (r1.2 -> r1.3)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/timezone/data/solar88.diff?r1=1.2&r2=1.3)
solar89 (r1.2 -> r1.3)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/timezone/data/solar89.diff?r1=1.2&r2=1.3)
southamerica (r1.3 -> r1.4)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/timezone/data/southamerica.diff?r1=1.3&r2=1.4)
systemv (r1.1 -> r1.2)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/timezone/data/systemv.diff?r1=1.1&r2=1.2)
yearistype.sh (r1.2 -> r1.3)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/timezone/data/yearistype.sh.diff?r1=1.2&r2=1.3)
zone.tab (r1.3 -> r1.4)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/timezone/data/zone.tab.diff?r1=1.3&r2=1.4)