Log Message:
-----------
Update docs as to when WAL logging can be skipped.
In 8.4 and prior, WAL-logging could potentially be skipped whenever
archive_mode=off. With streaming replication, this is now true only
if max_wal_senders=0.
Fujii Masao, with light copyediting by me
Modified Files:
--------------
pgsql/doc/src/sgml:
backup.sgml (r2.151 -> r2.152)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/backup.sgml?r1=2.151&r2=2.152)
perform.sgml (r1.75 -> r1.76)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/perform.sgml?r1=1.75&r2=1.76)