atrf-gpio: option -c to cycle through the pattern sequence with pass/fail input
atrf-gpio: option -c to cycle through the pattern sequence with pass/fail input

- atrf-gpio.c: added section titles
- atrf-gpio.c (DEFAULT_DELAY_MS, reg_op, usage): the "delay" command
  now accept an optional delay argument
- atrf-gpio.c (old_term, restore_term, raw, pass_fail): make standard
  input non-blocking and raw, and poll for pass/fail input
- atrf-gpio.c (usage, main): new option -c to cycle through the
  pattern sequence, waiting for pass/fail input

cfriedt/ben-wpan,cfriedt/ben-wpan,cfriedt/ben-wpan,cfriedt/ben-wpan,cfriedt/ben-wpan,cfriedt/ben-wpan