Log Message:
-----------
Document WAL recovery now uses checkpoints.
Simon Riggs
Modified Files:
--------------
pgsql/doc/src/sgml:
backup.sgml (r2.83 -> r2.84)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/backup.sgml.diff?r1=2.83&r2=2.84)