pgsql: Update PITR: < write-ahead logs [pitr] > write-ahead

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

< write-ahead logs [pitr]

write-ahead logs? [pitr]

< recovery.

recovery. A function call to do this would also be useful.

Modified Files:
--------------
pgsql/doc:
TODO (r1.1916 -> r1.1917)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/TODO.diff?r1=1.1916&amp;r2=1.1917)
pgsql/doc/src/FAQ:
TODO.html (r1.419 -> r1.420)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/FAQ/TODO.html.diff?r1=1.419&amp;r2=1.420)