Log Message:
-----------
Remove mention of pg_upgrade in release checklist.
Modified Files:
--------------
pgsql/src/tools:
RELEASE_CHANGES (r1.65 -> r1.66)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/tools/RELEASE_CHANGES.diff?r1=1.65&r2=1.66)