pgsql: Done: < * Improve port/qsort() to handle sorts with 50% unique

Log Message:
-----------
Done:

< * Improve port/qsort() to handle sorts with 50% unique and 50% duplicate
< value [qsort]
<
< This involves choosing better pivot points for the quicksort.
<

Modified Files:
--------------
pgsql/doc:
TODO (r1.2003 -> r1.2004)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/TODO.diff?r1=1.2003&amp;r2=1.2004)
pgsql/doc/src/FAQ:
TODO.html (r1.505 -> r1.506)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/FAQ/TODO.html.diff?r1=1.505&amp;r2=1.506)