Log Message:
-----------
Add a cross-reference to precedence information to CREATE OPERATOR's
documentation. Per suggestion from Marc Cousin.
Modified Files:
--------------
pgsql/doc/src/sgml/ref:
create_operator.sgml (r1.53 -> r1.54)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/create_operator.sgml?r1=1.53&r2=1.54)