TODO


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Definitely:

Maybe:

- actual realtime scheduling (maybe). sched(7). not sure it's
  needed (nice -20 seems OK even while compiling mame with -j5), and it
  might interfere with stuff like JACK.
- use a log file instead of stderr, so we can have error/warning messages
  after detaching from the tty.
- print our /dev/input/event* node name, if possible.
- options to set the virtual device name and vendor/product IDs.