Add support for the "System Firmware Version" parameter selector (1) to the "Get
System Info Parameters" command ("mc getsysinfo system_fw_version"). The "mc
getsysinfo" command was already implemented and supported, but strangely, only
standard parameter selecter values 2, 3, 4 and Dell-defined parameters were
supported; the standard parameter value 1 (system firmare version) was not
supported.