Log Message:
-----------
Update back-branch release notes.
Tags:
----
REL8_0_STABLE
Modified Files:
--------------
pgsql/doc/src/sgml:
release.sgml (r1.321.4.47 -> r1.321.4.48)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/release.sgml?r1=1.321.4.47&r2=1.321.4.48)