- sitl_gazebo in PX4/Firmware (304e00f1): https://github.com/PX4/sitl_gazebo/commit/d1f0bd4367d1cab01c772bb593a3f750b2f7dce2
    - sitl_gazebo current upstream: https://github.com/PX4/sitl_gazebo/commit/3d80f63562c24c1537e1f8423ce649c99ebc15ea
    - Changes: https://github.com/PX4/sitl_gazebo/compare/d1f0bd4367d1cab01c772bb593a3f750b2f7dce2...3d80f63562c24c1537e1f8423ce649c99ebc15ea

    3d80f63 2018-10-16 Elia Tarasov - add missing dimension
4722a06 2018-10-15 Elia Tarasov - fix px4flow gyro orientation wrt camera
7e22adc 2018-10-15 Elia Tarasov - fix px4flow gyro sensor handling:
30337e7 2018-10-15 Elia Tarasov - add px4flow gyro sensor to px4flow jinja model
dcf2c95 2018-10-12 Elia Tarasov - add px4flow gyro sensor handling
0b4d4e3 2018-10-12 Elia Tarasov - replace integrated onboard gyro calculation by px4flow gyro sensor
df516e6 2018-10-11 Elia Tarasov - add check for NAN in case of no gyro is present
bbe2d67 2018-10-11 Elia Tarasov - send NAN in case of gyro absence
354e055 2018-10-11 Elia Tarasov - add default flag for gyro presence

    - sitl_gazebo in PX4/Firmware (31b110c2): https://github.com/PX4/sitl_gazebo/commit/70ca64654061fb7a4279846d9da1ad3512cfc6ba
    - sitl_gazebo current upstream: https://github.com/PX4/sitl_gazebo/commit/d1f0bd4367d1cab01c772bb593a3f750b2f7dce2
    - Changes: https://github.com/PX4/sitl_gazebo/compare/70ca64654061fb7a4279846d9da1ad3512cfc6ba...d1f0bd4367d1cab01c772bb593a3f750b2f7dce2

    d1f0bd4 2018-10-10 Elia Tarasov - remove redundant check for gazebo major version greater than 7
a796798 2018-10-10 Elia Tarasov - change gazebo version for irlock plugin
83cadac 2018-10-10 Elia Tarasov - fix compile error for sonar plugin
aac3d20 2018-10-10 Elia Tarasov - fix compile error for lidar plugin
5a497ad 2018-10-10 Elia Tarasov - fix gps delay computation
3f0a769 2018-10-10 Elia Tarasov - fill timestamp inside plugin callback
779954c 2018-10-10 Elia Tarasov - send and recv sitl_gazebo message timestamp as unified type
46c4b29 2018-10-10 Elia Tarasov - proto: change timestamp name and type for consistency

    - sitl_gazebo in PX4/Firmware (6c34407d): https://github.com/PX4/sitl_gazebo/commit/9d512af0075659f0ace91ec0e2f8c8a170f911fb
    - sitl_gazebo current upstream: https://github.com/PX4/sitl_gazebo/commit/1264b74493cd2f362d852530bcc7423a013f2151
    - Changes: https://github.com/PX4/sitl_gazebo/compare/9d512af0075659f0ace91ec0e2f8c8a170f911fb...1264b74493cd2f362d852530bcc7423a013f2151

1264b74 2018-09-30 TSC21 - gazebo_motor_failure_plugin: clean up and fix for Gazebo 9
77141e7 2018-09-29 TSC21 - Travis: add naming for jobs within the build matrix
e46f82a 2018-09-29 TSC21 - add new 18.04 Melodic build
5b93919 2018-09-29 TSC21 - Travis: update ROS docker container

to fix Cygwin upload. It failed silently but when catching it prints
"non-standard baudrates are not supported on this platform".
Discussion about platform independet FTDI detection is in issue #10429.

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 '='

Can be reverted if needed later on...

This checks if we are on macOS and if we have Java 8 installed. If yes,
it falls back to Java 8 by setting JAVA_HOME.

This avoids https://github.com/PX4/jMAVSim/issues/81

This should resolve the issues with Java 9/10.

I sometimes start jmavsim independently from px4, and in that case jmavsim
should not be killed. These are the commands:
./Tools/jmavsim_run.sh
make posix none

    - sitl_gazebo in PX4/Firmware (031885f9a90e70cd8d8aa22c774dfca1bd0c8dfb): https://github.com/PX4/sitl_gazebo/commit/821c55ca714d7acf93d8ed96af71237b8437e488
    - sitl_gazebo current upstream: https://github.com/PX4/sitl_gazebo/commit/9d512af0075659f0ace91ec0e2f8c8a170f911fb
    - Changes: https://github.com/PX4/sitl_gazebo/compare/821c55ca714d7acf93d8ed96af71237b8437e488...9d512af0075659f0ace91ec0e2f8c8a170f911fb

    9d512af 2018-09-12 Lorenz Meier - Update gazebo_wind_plugin.cpp
46d0be1 2018-09-12 Lorenz Meier - Update Wind.proto
14f09ff 2018-09-03 Elia Tarasov - fix compilation for gazebo version equal or greater 9
de86d7b 2018-08-31 Elia Tarasov - use template class vector3d from ignition::math
f3cba29 2018-08-31 Elia Tarasov - enable wind plugin

 - needed for cmake packaging

It seems that the oneline to find the process ID of any running jMAVSim
instance was not working correctly.
1. On Linux, the name of the process does not contain Simulator but
   jmavsim_run.jar. Also, it triggers incorrectly, if you have opened
   Simulator.java using the command line :).
2. The cutting to get the PID at the end does not work as intenteded and
   gives the username instead of PID, at least on Arch Linux. Using awk
   should fix this.

Not needed anymore

The high frequency acceleration noise levels in the gazebo models and also seen on some hardware is causing the IMU vibration check warning to fail.

The thresholds have been lifted and the reporting improved to make it clearer which sensor noise is causing the failure.