mc_ssp_open_serial_device: using device from metacash struct now
added sanity check for file type/status of serial device
Merge branch 'master' of https://github.com/meta23/Payout into
meta23-master

Conflicts:
	BasicValidator.c
added newline and carriagereturn to strtok in handle_cmd_reset
shutdown now sets a flag to terminate the main loop
add command to configure bezel color
added display on / off