Log Message:-----------Add some examples.
Modified Files:-------------- pgsql/contrib/chkpass: README.chkpass (r1.4 -> r1.5) (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/chkpass/README.chkpass?r1=1.4&r2=1.5)