Do not make minimum airspeed assumptions, as we can trust our digital sensor a bit. A blocked pitot also most likely will result in more than just 6.5 m/s airspeed and so the check is based on a bunch of weak assumptions
fw_att_controller: Forcing actuator scaling to at least minimum speed
mavlink_receiver: fixed bug in manual control publication, minor refactoring
Merge pull request #808 from PX4/mavlink_recv_fix

mavlink_receiver fixes
mavlink: Add manual SP subscription
Merge pull request #807 from PX4/trust_airspeed

Do not make minimum airspeed assumptions, as we can trust our digital se...
Merge branch 'master' into rc_timeout
mavlink_receiver: don't publish rc_channels on manual_control from mavlink, set switches to unmapped state instead of using previous values