Log Message:
-----------
Improve pgarchivecleanup documentation, per comments from Satoshi Nagayasu.
Modified Files:
--------------
pgsql/doc/src/sgml:
pgarchivecleanup.sgml (r1.2 -> r1.3)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/pgarchivecleanup.sgml?r1=1.2&r2=1.3)