mavlink: swap x and y when handling MANUAL_CONTROL mavlink message

Easystar mixer fix

Add command to do PWM step inputs

esc_calib: corrected name of mc controller

commander: Stop mixing board support and high level code - just accept t...

commander: Stop mixing board support and high level code - just accept that non-mandatory leds may or may not be there

mc_att_control: yaw feed-forward in manual control modes fixed

Proper data manager restart handling

rcS: add options to disable or fake gps output

this allows the safety switch on px4io to be forced off

this allows the FMU to force the safety off on the IO board. Useful in
two cases:

 1) vehicles where the safety switch is impractical or not useful
 (eg. HAB planes or internal combustion motors)

 2) doing ESC calibration on multi-copters

also fixed preceding mask calculation in show heaps

Introduce SYS_RESTART_TYPE parameter having one of 3 values: boot
restart, inflight restart, or unknown restart, and defaulting to unknown
restart.

px4io.cpp sets this parameter according to the type of restart detected.

dataman.c retrieves this parameter and clears data entries according to
their persistence level. Does nothing if unknown restart.

mpc_local_pos + rc_timeout

Renamed parameters which changed from RAD to DEGREES to avoid user confusion. Also made naming of the two parameters more consistent.

Fix what is looking like a missing cast in CMSIS - the cast within the line would make only halfway sense if this was actually intended as double precision operation

Arm/Disarm duplication removal and support for Disarm in VEHICLE_CMD_COMPONENT_ARM_DISARM

Mag declination hotfix

Compile pedantic

warnings: don't spam with warning for missing field initializer