Log Message:
-----------
First pass over release documentation. I trimmed down some of the
entries and removed a few.
Modified Files:
--------------
pgsql/doc/src/sgml:
release.sgml (r1.520 -> r1.521)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/release.sgml?r1=1.520&r2=1.521)