* Path cleanup for SITL.

* Restructured sitl scripts dir.

* Set integration tests to use ekf2 for vtol.

* Fix sitl paths for mac.

The result of this conversion is undefined!

* Update multi_tables.py

* Update mixer_multirotor.cpp

* Create gk

* Rename gk to 13011_greenkoptr

* Update 13011_greenkoptr

* Create greenkoptr.main

* Update and rename greenkoptr.main to greenkoptr.main.mix

* Create greenkoptr.aux.mix

* Update greenkoptr.main.mix

* Update 13011_greenkoptr

* Update multi_tables.py

Corrected HEX_T position and rotation for motors 1-2-5-6

* Delete 13011_greenkoptr

* Delete greenkoptr.aux.mix

* Delete greenkoptr.main.mix

* Update mixer_multirotor.cpp

- ulog file message rate limited to 50Hz
- queuing with size 2
- this replaces the mavlink log message in the ulog
  (but the mavlink warnings & errors still go to the ulog)

- also add log file to the status output

- there is no way to change it at runtime
- it was implemented wrong (<= comparison disabled the PANIC log level)

The tool jps does not seem to be available on macos Java.

* Helicopter aiframe and basic PID control

* codestyle

* Blade 130x gains working but not optimal

* Changed behaviour of feedforward for all multicopter

- Fix if _retries variable is not set to prevent "UINT_MAX-1"
  retries.
- Update for the cmake_hexagon submodule.

QGC failed to calibrate RC with the old range.

* Low impact changes from path_cleanup branch.

This is a step towards minimizing the diff with path_cleanup branch.

* Update ecl.

* Revert matrix update.

* Revert ecl and matrix.

* Update sitl gazebo.

* Revert sitl_gazebo and matrix changes.