Log Message:
-----------
Update examples in planstats.sgml for 8.3, and improve some aspects of
that discussion. Add a link from perform.sgml.
Modified Files:
--------------
pgsql/doc/src/sgml:
perform.sgml (r1.67 -> r1.68)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/perform.sgml?r1=1.67&r2=1.68)
planstats.sgml (r1.8 -> r1.9)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/planstats.sgml?r1=1.8&r2=1.9)