_Transmit: use SCARD_PCI_RAW for undefined protocol

If the connection to the card/reader was done using SCARD_SHARE_DIRECT
then the card protocol has not been negociated and is undefined.

This is not an error and _Transmit should not fail in this case.
For example this is used to read/write memory cards.

Thanks to Leif Johansson for the bug report.
"T0/T1 marshaling confusion"
#31

smartcard/scard/scard.i

@@ -689,6 +689,7 @@ static SCARDRETCODE _Transmit(
  break;
 
  case SCARD_PROTOCOL_RAW:
+ case SCARD_PROTOCOL_UNDEFINED:
  piorequest=(PSCARD_IO_REQUEST)myg_prgSCardRawPci;
  break;