[COMMITTERS] pgsql: Add some examples.

[D'Arcy J.M. Cain]

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)

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