Log Message:-----------Further editing of release notes.
Modified Files:-------------- pgsql/doc/src/sgml: release-9.0.sgml (r2.51 -> r2.52) (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/release-9.0.sgml?r1=2.51&r2=2.52)