Made pwm command sending continously, improved failsafe logic
Merge branch 'master' of github.com:PX4/Firmware into io_fixes
Merge branch 'master' of github.com:PX4/Firmware into io_fixes
Fixed pwm count check
Code formatting and warning fixes
Fixed chan count logic
Added safety status feedback, disallow arming of a rotary wing with engaged safety
Play warning tune
Extended vehicle detection
Minor state machine improvements and fixes for IO safety / in-air restart handling
Software version check fixes
Merge pull request #309 from DrTon/sdlog2

sdlog2 critical bug fixed, added ARSP message
First try to prevent motors from stopping when armed
sdlog2 bugs fixed
Merge pull request #311 from DrTon/sdlog2

sdlog2 bugs fixed
Adressed performance concern and fixed a copy paste bug
Merge remote-tracking branch 'upstream/master' into new_state_machine
Merge remote-tracking branch 'upstream/io_fixes' into new_state_machine

Conflicts:
	src/drivers/px4io/px4io.cpp
	src/modules/commander/commander.c
	src/modules/commander/state_machine_helper.c
	src/modules/commander/state_machine_helper.h
	src/modules/px4iofirmware/mixer.cpp
	src/modules/uORB/topics/actuator_controls.h
	src/modules/uORB/topics/vehicle_status.h
Forgot to remove some debug stuff
Use rollacc and pitchacc from the estimator instead of differentiating in the controller