Added parameter RALLY_TOTAL.
Added handlers for new MAVLink messages RALLY_POINT and
RALLY_FETCH_POINT.
defines.h modified to make room in EEPROM to store rally points.
rally.pde added and is responsible for ensuring rally points get
stored in the correct spot in EEPROM.
Multiple Rally/RTL point support now done. If rally points have
been defined, then when RTL mode is entered, the closest Rally
point is chosend and the plane loiters at that point.
Note only 10 rally points can be defined; this is to save space in
the APM's EEPROM.
(There are also various error states MAV_STATE_CRITICAL that are unchanged
by this check in).
The is_flying() check is similar to the code in suppress_throttle, but
I wanted to make it very optimistic on thinking we are flying - which is
not what you want for set_throttle...
(AC has similar MAV_STATE_ACTIVE vs MAV_STATE_STANDBY behavior now)
this allows people without specified settings in their receiver for
failsafe to choose FBWA zero throttle glide on throttle failsafe. That
can be a better choice when flying at a R/C club field
this is an unusual option that gives FBWA flight control in AUTO
mode. It is being added to support use of APM in an aerial robotics
competition where students need to pilot the plane, but they still
need waypoint triggering of payloads
this makes it safer to enable the geofence as a receiver failsafe
mode. It retains manual throttle control, so if it triggers on the
ground due to the receiver losing signal from the transmitter then the
throttle can be kept low, preventing an unexpected takeoff.