mavlink: Start the same in HIL mode as in normal mode. Requires all HIL tools to run sh /etc/init.d/rc.usb now. Improve UART error handling
Merge pull request #850 from PX4/mavlink_startup_cleanup

mavlink: Start the same in HIL mode as in normal mode. Requires all HIL ...
Merge branch 'master' into rc_timeout
commander: don't start RTL on failsafe if landed
Merge branch 'rc_timeout' into mpc_rc