Log Message:
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Add some notes about unimplemented aspects of PITR backup/recovery.
Modified Files:
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pgsql-server/doc/src/sgml:
backup.sgml (r2.41 -> r2.42)
(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/doc/src/sgml/backup.sgml.diff?r1=2.41&r2=2.42)