fix operation priority
	modified:   flight/pios/common/pios_bmc050.c
Add driver for L3G4200D digital gyroscope.
	modified:   flight/modules/Sensors/sensors.c
	new file:   flight/pios/common/pios_l3g4200d.c
	new file:   flight/pios/inc/pios_l3g4200d.h
	modified:   flight/pios/pios.h
	modified:   flight/targets/boards/brainyfly/firmware/inc/pios_config.h
	modified:   make/apps-defs.mk