Log Message:
-----------
Document that chkpass ignores password characters after the eighth.
Modified Files:
--------------
pgsql/contrib/chkpass:
README.chkpass (r1.2 -> r1.3)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/chkpass/README.chkpass.diff?r1=1.2&r2=1.3)