new pinMode func

Signed-off-by: gootoomoon <gootoomoon@gmail.com>

	modified:   WiringPi/wiringPi/wiringPi.c
	modified:   WiringPi/wiringPi/wiringPi.h
	modified:   cb_test/py_test/digital.py
	modified:   wiringpi.i
	modified:   wiringpi2-class.py
	modified:   wiringpi_wrap.c