perfcounter: write time unit for all fields
Merge pull request #1071 from PX4/percounterunit

perf_counter: write time unit for all fields
Hotfix: Improve PX4IO monitor command
Hotfix: Fix message name typo
Hotfix: Only orb_copy items in mavlink app if the timestamp changed
Fix error reporting in stream config, report if a stream was not found at all in stream list and return error
Hotfix: Move channel count to right position
extend integrator reset flags in uorb attitude setpoint topic to all axes
fw att control: reset integrators when requested via attitude setpoint topic
fw pos control: set integrator reset flags in attitude setpoint topic, set them to true when launchdetection is running (while waiting for launch)
Merge remote-tracking branch 'upstream/master' into launchdetectorreset
fw pos ctrl: move setting of attitude integral reset flag
fw pos ctrl: remove comments
Revert "Hotfix: Only orb_copy items in mavlink app if the timestamp changed"

This reverts commit a9653fa10db3884d3d17ee33f80f23aa2e3ef842.
Merge pull request #1076 from PX4/mavlinkrevert

Revert "Hotfix: Only orb_copy items in mavlink app if the timestamp changed"
commander: Make mavlink_fd in arming command non-optional
Add mavlink_fd to all commander arm transitions to provide user feedback why the arming command failed
Merge pull request #1073 from PX4/launchdetectorreset

FW: reset attitude control integrals in launchdetection mode (when waiting for takeoff)
Merge pull request #1077 from PX4/arming_feedback_fix

Arming feedback fix
mavlink: Always send heartbeat and do not require both topics to update