pgsql: Add items: > o Allow multiple vacuums so large tables do not

Log Message:
-----------
Add items:

>     o Allow multiple vacuums so large tables do not starve small
>       tables
>
>       http://archives.postgresql.org/pgsql-general/2007-01/msg00031.php
>
>     o Improve control of auto-vacuum
>
>       http://archives.postgresql.org/pgsql-hackers/2006-12/msg00876.php

Modified Files:
--------------
    pgsql/doc:
        TODO (r1.2043 -> r1.2044)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/TODO.diff?r1=1.2043&r2=1.2044)
    pgsql/doc/src/FAQ:
        TODO.html (r1.544 -> r1.545)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/FAQ/TODO.html.diff?r1=1.544&r2=1.545)