Log Message:-----------contrib/isn updates from Jeremy Kronuz.
Modified Files:-------------- pgsql/contrib/isn: README.isn (r1.1 -> r1.2) (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/isn/README.isn.diff?r1=1.1&r2=1.2) isn.c (r1.1 -> r1.2) (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/isn/isn.c.diff?r1=1.1&r2=1.2) isn.h (r1.1 -> r1.2) (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/isn/isn.h.diff?r1=1.1&r2=1.2) isn.sql.in (r1.1 -> r1.2) (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/isn/isn.sql.in.diff?r1=1.1&r2=1.2)