Log Message:
-----------
Create preliminary release notes for upcoming back-branch releases.
Modified Files:
--------------
pgsql/doc/src/sgml:
release.sgml (r1.376 -> r1.377)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/release.sgml.diff?r1=1.376&r2=1.377)