Thread: pgsql: Add example showing how to remove a password from a role.

Log Message:
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Add example showing how to remove a password from a role.

Andreas Scherbaum

Modified Files:
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    pgsql/doc/src/sgml/ref:
        alter_role.sgml (r1.9 -> r1.10)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/alter_role.sgml?r1=1.9&r2=1.10)