Log Message:
-----------
Add description about partial WAL archiving for PITR:
>
> Doing this will allow administrators to know more easily when the
> archive contins all the files needed for point-in-time recovery.
Modified Files:
--------------
pgsql/doc:
TODO (r1.1492 -> r1.1493)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/TODO.diff?r1=1.1492&r2=1.1493)