Log Message:-----------Add mention of shared-memory/disk for multi-master clustering.
Modified Files:-------------- pgsql/doc/src/sgml: high-availability.sgml (r1.8 -> r1.9) (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/high-availability.sgml.diff?r1=1.8&r2=1.9)
