pgsql: Update: < * Flush cached query plans when the dependent objects

Log Message:
-----------
Update:

< * Flush cached query plans when the dependent objects change or
< when the cardinality of parameters changes dramatically

* Flush cached query plans when the dependent objects change,
when the cardinality of parameters changes dramatically, or
when new ANALYZE statistics are available

Modified Files:
--------------
pgsql/doc:
TODO (r1.1732 -> r1.1733)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/TODO.diff?r1=1.1732&amp;r2=1.1733)
pgsql/doc/src/FAQ:
TODO.html (r1.237 -> r1.238)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/FAQ/TODO.html.diff?r1=1.237&amp;r2=1.238)