FIT: omit extra printing
debug macros
reduce chattiness in release
make ANTFS_Disconnect not wait for reply
SerialUsb: overhaul

1) for 0x1008 and 0x1009 modprobe() and open_tty() are not necessary
2) store the picked vid/pid pair
3) print more about picked device
4) make open() not call close()
5) try signalling readBlocking() from close()
6) make close() not crash trivially