Log Message:
-----------
Document use of pg_locks.objid for advisory locks, suggestion from Marc Mamin
Modified Files:
--------------
pgsql/doc/src/sgml:
catalogs.sgml (r2.161 -> r2.162)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/catalogs.sgml?r1=2.161&r2=2.162)
func.sgml (r1.422 -> r1.423)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/func.sgml?r1=1.422&r2=1.423)