Log Message:
-----------
Improve README with mention of new functions.
Modified Files:
--------------
pgsql-server/contrib/dbsize:
README.dbsize (r1.2 -> r1.3)
(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/contrib/dbsize/README.dbsize.diff?r1=1.2&r2=1.3)
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