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)