if it differs by more than 0.01 dBm from the level specified
- tools/atspi-txrx/Makefile (LDLIBS): added -lm, for fabs()
- tools/atspi-txrx/atspi-txrx.c (transmit, usage, main): add optional
command-line argument with the number of times to send the message
- tools/atspi-txrx/atspi-txrx.c (receive, transmit, die, main): return and
clean up on ^C
- tools/tools/lib/misctxrx.c (wait_for_interrupt) return and raise SIGINT
for the caller's signal handler on ^C
- tools/atspi-txrx/atspi-txrx.c: cleaned up includes - we need stdint.h but
we don't need atspi/ep0.h
- tools/atspi-txrx/atspi-txrx.c (wait_for_interrupt),
tools/include/misctxrx.h (wait_for_interrupt), tools/lib/Makefile (OBJS),
tools/lib/misctxrx.c (wait_for_interrupt): moved wait_for_interrupt from
atspi-txrx to the atspi library, so that we can share it
