Ctrl+C handling is done in ctrlc.c, and a break condition now persists
until the interactive reader begins to process the next command. The
condition is cleared by calling ctrlc_clear().
The devicelist table maps chip ID bytes to an enum of devicetype_t. A
separate table provides configuration data for each value of
devicetype_t.
Original patch submitted by Stanimir Bonev <bonev_st@abv.bg>.
Constructors and device class definitions are now contained in fet.c.
The methods which implement the device interface are in fet_core.c, and
these are independent of how the device object is constructed.
Daniel Beer