m65 fails to detect TE0790-03L style JTAG (not Xilinx License)

[lydon42]

User MegaBeauvais reported on discord that m65 does not recognize his JTAG adapter.

[lydon42]

Investigation showed that the USB device does not have a serial:

Bus 001 Device 004: ID 0403:6010 Future Technology Devices International, Ltd FT2232C/D/H Dual UART/FIFO IC
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass            0 
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0        64
  idVendor           0x0403 Future Technology Devices International, Ltd
  idProduct          0x6010 FT2232C/D/H Dual UART/FIFO IC
  bcdDevice            7.00
  iManufacturer           1 FTDI
  iProduct                2 Dual RS232-HS
  iSerial                 0 
  bNumConfigurations      1
  Configuration Descriptor:

But m65 depends on the serial, as it allows matching against it, so a device without serial is not added to the list of available devices.