pgsql: IP port -> TCP port backpatched to 8.1, where this first

Log Message:
-----------
IP port -> TCP port

backpatched to 8.1, where this first appeared

Modified Files:
--------------
pgsql/doc/src/sgml:
monitoring.sgml (r1.77 -> r1.78)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/monitoring.sgml?r1=1.77&r2=1.78)