SCD: Support not-so-smart card readers.
* scd/ccid-driver.c (struct ccid_driver_s): Add auto_voltage, auto_param, and auto_pps. (parse_ccid_descriptor): Set auto_voltage, auto_param, and auto_pps. Support non-autoconf readers. (update_param_by_atr): New. (ccid_get_atr): Use 5V for PowerOn when auto_voltage is not supported. Use 0x10 when nonnull_nad for SetParameters. Call update_param_by_atr for parsing ATR, and use param for SetParameters. Send PPS if reader requires it and card is negotiable. When bNadValue in the return values of SetParameters == 0, clear handle->nonnull_nad flag.
This change is to support more card readers by the internal driver.
Tested with 08e6:3478 Gemplus PinPad Smart Card Reader.