pgsql: Update.

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

< have its heap and index files truncated. One issue is
< that no other backend should be able to add to the table
< at the same time, which is something that is currently
< allowed.

removed or have its heap and index files truncated. One
issue is that no other backend should be able to add to
the table at the same time, which is something that is
currently allowed.

Modified Files:
--------------
pgsql/doc:
TODO (r1.1652 -> r1.1653)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/TODO.diff?r1=1.1652&amp;r2=1.1653)
pgsql/doc/src/FAQ:
TODO.html (r1.159 -> r1.160)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/FAQ/TODO.html.diff?r1=1.159&amp;r2=1.160)