Log Message:
-----------
Add command-line documentation for pg_upgrade.
Modified Files:
--------------
pgsql/doc/src/sgml:
oid2name.sgml (r1.4 -> r1.5)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/oid2name.sgml?r1=1.4&r2=1.5)
pgupgrade.sgml (r1.5 -> r1.6)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/pgupgrade.sgml?r1=1.5&r2=1.6)