simplify ADC
update printf format specifiers for single byte hex output
immectl: add DELAY and WAITHALT
imme: remove some pointless code
immectl: issue NOP rather than HALT after reinit, merely since that is what the datasheet does.
immectl: add -d to RUNINSTR; fix some more printf format specifiers
immectl: do not reinit by default anymore
immectl: sercomm: add byte counters
immectl: sercomm: use cfmakeraw() to not choke on XON/XOFF
sercommd: use localhost rather than 127.0.0.1
imme: adjust adc and uart speeds
imme: speed up operation now that it somewhat works
imme: another debug LED+input because i am fighting heisenbugs
imme: uart_intr: remove some unused functions