Log Message:
-----------
Update RELEASE_CHANGES to mention updating the timezone database as
a routine part of release prep.
Modified Files:
--------------
pgsql/src/timezone:
README (r1.3 -> r1.4)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/timezone/README.diff?r1=1.3&r2=1.4)
pgsql/src/tools:
RELEASE_CHANGES (r1.46 -> r1.47)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/tools/RELEASE_CHANGES.diff?r1=1.46&r2=1.47)