sdlog2: VER message added instead of FWRV
fix scaling (unit) of airspeed in HIL

src/modules/mavlink/mavlink_receiver.cpp
get_rot_matrix() moved to separate library, accel calibration of rotated board fixed
accelerometer calibration fix
accelerometer_calibration: code style fixed, lib/conversion copyright fix
Adjusted mavlink info messages during gyro calibration to not break QGroundControl.
calibration: bugs fixed, mavlink messages cleanup
accel/gyro/mag calibration: big cleanup, use common messages
accelerometer_calibration: stability fix
Working on roboclaw driver.
Debugging roboclaw comm.
Roboclaw encoders/ dutycycledrive complete.
Updated script.
Removed old timing hack.
Updated segway controller for new state machine.
Changed driver to control motor duty cycle.
Merge pull request #485 from jgoppert/roboclaw

Roboclaw
Fixed bug with fd leak in rc_calibration_check
param_save_default() rewritten: don't try 10 times to do every operation but do it safe using temp file
Merge pull request #486 from PX4/param_save_fix

Parameter saving fixed