pgsql: Update FAQ for 8.2.3.

Log Message:
-----------
Update FAQ for 8.2.3.

Tags:
----
REL8_2_STABLE

Modified Files:
--------------
    pgsql/doc:
        FAQ (r1.402.2.5 -> r1.402.2.6)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/FAQ.diff?r1=1.402.2.5&r2=1.402.2.6)
        FAQ_AIX (r1.19.2.5 -> r1.19.2.6)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/FAQ_AIX.diff?r1=1.19.2.5&r2=1.19.2.6)
        FAQ_HPUX (r1.14.2.5 -> r1.14.2.6)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/FAQ_HPUX.diff?r1=1.14.2.5&r2=1.14.2.6)
        FAQ_IRIX (r1.3.12.5 -> r1.3.12.6)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/FAQ_IRIX.diff?r1=1.3.12.5&r2=1.3.12.6)
        FAQ_SCO (r1.11.8.5 -> r1.11.8.6)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/FAQ_SCO.diff?r1=1.11.8.5&r2=1.11.8.6)
        FAQ_Solaris (r1.22.2.6 -> r1.22.2.7)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/FAQ_Solaris.diff?r1=1.22.2.6&r2=1.22.2.7)
    pgsql/doc/src/FAQ:
        FAQ.html (r1.358.2.5 -> r1.358.2.6)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/FAQ/FAQ.html.diff?r1=1.358.2.5&r2=1.358.2.6)