080501  Patch from Stephen P. Schaefer fixes several issues in
        write_cfg.
        In the server_by_weight function, multiply current connections
        by WEIGHT_FACTOR to make the selection mo fine grained when the
        number of connections is small.
        Released 0.17.3.

080326  Patch from Dana Contreras: send stdio to /dev/null after
        forking.
        Fixed a bunch of cosmetic signedness compiler warnings.