pgsql: Update of port patches, HEAD patch only.

Log Message:
-----------
Update of port patches, HEAD patch only.

Simon Riggs

Modified Files:
--------------
    pgsql/doc:
        FAQ_AIX (r1.19 -> r1.20)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/FAQ_AIX.diff?r1=1.19&r2=1.20)
        FAQ_HPUX (r1.14 -> r1.15)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/FAQ_HPUX.diff?r1=1.14&r2=1.15)
        FAQ_IRIX (r1.3 -> r1.4)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/FAQ_IRIX.diff?r1=1.3&r2=1.4)
        FAQ_MINGW (r1.5 -> r1.6)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/FAQ_MINGW.diff?r1=1.5&r2=1.6)
        FAQ_SCO (r1.11 -> r1.12)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/FAQ_SCO.diff?r1=1.11&r2=1.12)