pgsql: Update time zone data files to tzdata release 2010c: DST law

Log Message:
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Update time zone data files to tzdata release 2010c: DST law changes in
Bangladesh, Mexico, Paraguay.

Tags:
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REL8_2_STABLE

Modified Files:
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    pgsql/src/timezone/data:
        asia (r1.6.2.12 -> r1.6.2.13)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/timezone/data/asia?r1=1.6.2.12&r2=1.6.2.13)
        europe (r1.6.2.8 -> r1.6.2.9)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/timezone/data/europe?r1=1.6.2.8&r2=1.6.2.9)
        northamerica (r1.6.2.9 -> r1.6.2.10)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/timezone/data/northamerica?r1=1.6.2.9&r2=1.6.2.10)
        southamerica (r1.6.2.10 -> r1.6.2.11)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/timezone/data/southamerica?r1=1.6.2.10&r2=1.6.2.11)
        zone.tab (r1.6.2.9 -> r1.6.2.10)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/timezone/data/zone.tab?r1=1.6.2.9&r2=1.6.2.10)