- start mavlink on network by default (port 14570)
 - start mavlink for TX2 companion by default

The PX4BuildBot extracted the comments from the lines following
the class line which says "Plane" as the class. To avoid the
confusion for the bot I moved the comment further down.

 * The X-UAV Mini Talon airframe with the new type Plane V-Tail uses the new AAVVTWFF_vtail mixer.
The new mixer is derived from the AAVVTWFF mixer and is a generic V-Tail mixer. I left the flaps and wheel although there are no flaps and wheels on the mini talon to keep it generic. The airframe configuration is derived from the Albatross A-Tail.

The typhoon has a 6011_typhoon_h480.post script that got matched as well.
Now we exclude all files that contain a dot (apparently it's not so easy
to do generic pattern matching in a portable way, but this works).

This uses the systems default shell:
- Ubuntu: dash
- Fedora: bash

Since bash is invoked via /bin/sh, it operates in POSIX mode:
  https://tiswww.case.edu/php/chet/bash/POSIX

- remove '# Ignore the expand_aliases command in zshell.'
  Not needed because the shell operates in POSIX mode
- [[ is bashism -> use [
- autostart_files=( $autostart_file_match )
  is not supported in dash, so use 'ls'
- shellcheck runs the dash flavor, since dash is a minimalistic shell.

Tested on dash & bash.

- NuttX supports both versions
- POSIX shell only supports '='

This is because NuttX uses a different assignment for variables.

Replaced with the more generic serial config params.

rc.mavlink contains automatic transition support that can be removed after
the next release.

Replaced with the more general serial config params.

- only a few configs done yet

Modify 500001_axialracing_ax10 to utilize rc.ugv_defaults to allow deprecating rc.axialracing_ax10_apps and rc.axialracing_ax10_defaults and update CMakeLists.txt.

Signed-off-by: Roman <bapstroman@gmail.com>

Remove logic from rc.vehicle_setup that resulted in redundantly setting the MAV_TYPE to the same initial default value set within the script.

Alphabetize vehicle type logic block order and Update param set MAV_TYPE  logic to only set the parameter if no MAV_TYPE was previously set.

 - remove all platform defines

Updated rc.vtol_defaults to correct PWM_AUX behavior for VTOL airframes. Added PWM_AUX_RATE to rc.vtol_default and set parameters directly instead of environment variables.

This allows a simple-to-use bootloader update mechanism to switch from
fmu-v2 to fmu-v3 target that has more flash.

Added an imu heater driver, formatted whitespace, standardized comments, and added doxy documentation.

Edit the init.d-posix files to set MAV_TYPE script variables, and alphabetize lists in a few places.