pgsql: Update 8.1.X FAQs.

Log Message:
-----------
Update 8.1.X FAQs.

Tags:
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REL8_1_STABLE

Modified Files:
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    pgsql/doc:
        FAQ (r1.362 -> r1.362.2.1)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/FAQ.diff?r1=1.362&r2=1.362.2.1)
        FAQ_AIX (r1.14.2.1 -> r1.14.2.2)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/FAQ_AIX.diff?r1=1.14.2.1&r2=1.14.2.2)
        FAQ_DEV (r1.99 -> r1.99.2.1)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/FAQ_DEV.diff?r1=1.99&r2=1.99.2.1)
    pgsql/doc/src/FAQ:
        FAQ.html (r1.318 -> r1.318.2.1)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/FAQ/FAQ.html.diff?r1=1.318&r2=1.318.2.1)
        FAQ_DEV.html (r1.102 -> r1.102.2.1)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/FAQ/FAQ_DEV.html.diff?r1=1.102&r2=1.102.2.1)