merge r738841

      </Location>

    </example>

    <p> Providers are queried in order until a provider finds a match

    for the requested username, at which point this sole provider will 

    attempt to check the password.  A failure to verify the password does

    not result in control being passed on to subsequent providers.</p>

    <p>Providers are implemented by <module>mod_authn_dbm</module>,

    <module>mod_authn_file</module>, <module>mod_authn_dbd</module>,

    and <module>mod_authnz_ldap</module>.</p>