Log Message:
-----------
Make some incremental improvements and fixes to the documentation on
Continuous Archiving. Plenty of editorial work remains...
Modified Files:
--------------
pgsql/doc/src/sgml:
backup.sgml (r2.89 -> r2.90)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/backup.sgml.diff?r1=2.89&r2=2.90)