pgsql: Update: < writer.

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

< writer.

writer. It might cause problems for applying WAL on recovery
into a partially-written page, but later the full page will be
replaced from WAL.

Modified Files:
--------------
pgsql/doc:
TODO (r1.1595 -> r1.1596)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/TODO.diff?r1=1.1595&amp;r2=1.1596)
pgsql/doc/src/FAQ:
TODO.html (r1.102 -> r1.103)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/FAQ/TODO.html.diff?r1=1.102&amp;r2=1.103)