Changed the gertboard code to use it
and ran more tests on he Gertboard code.

and an example.

code. Seems the old 4011 in the NES controller isn't that fast
afterall!

to pumSetRange() happens.

ANDing with 0x3FF was wrong anyway as the PWM counter does from zero
to the top value, not top-1 as I originally thought.

Conflicts:
	gpio/gpio.c

Updated wiringPi to add new PWM controls.

Added top-level build script for lazy building.

in pinMode ()

General tidying up of some of the code round delayMicroseconds