- sitl_gazebo in PX4/Firmware (d05bc285): https://github.com/PX4/sitl_gazebo/commit/7c5a7bb226f503ce7596c2067dac828cf07abcaa
 - sitl_gazebo current upstream: https://github.com/PX4/sitl_gazebo/commit/28921bca9df9a212675b8e888c926d1ec6f6b28e
 - Changes: https://github.com/PX4/sitl_gazebo/compare/7c5a7bb226f503ce7596c2067dac828cf07abcaa...28921bca9df9a212675b8e888c926d1ec6f6b28e

28921bc 2018-03-27 amy wagoner - Added fpv_cam.sdf as an exception.
c84d79c 2018-03-26 amy wagoner - removed unexpected element 'torsional'
4d777a7 2018-03-26 amy wagoner - Removed 'pose frame'
771265b 2018-03-26 amy wagoner - Added iris fpv world.
016a612 2018-03-26 amy wagoner - Added generic camera model and iris fpv model.

This brings Gazebo 9 compatibility.

* Lists ROMFS files explicity instead of using GLOB_RECURSE

Previously, when ROMFS files that were not airframes were touched, the ROMFS
would not be rebuilt. The ROMFS files are now specified explicityl in a
CMakeLists.txt file that is located in the root ROMFS directory.

Now when one of the ROMFS files is touched the whole ROMFS is rebuilt.

When new files are added to the ROMFS, they need to be explicity added to
the CMakeLists in the ROMFS root directory.

* ROMFS: adds individual CMakeLists files in each subdirectory

Also moves the temporary ROMFS build directory to ${PX4_BINARY_DIR}/ROMFS/genromfs
so that the cmake_install.cmake files and the CMakeFiles directories (generated whenever
are not add_subdirectory() is called) are not generated in the temporary ROMFS directory
from which the ROMFS binary is created.

* cmake ROMFS generate add px4_add_romfs_files function

* ROMFS CMakeLists: adds explanatory comment to px4_add_romfs_files function

* ROMFS CMakeLists: updates copyright headers

Fixes a mavlink 2 parsing bug

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

This gets rid of a printf.

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

* This includes the new basic camera control.

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

So that they are unique.

- remove commas from a csv table file string to avoid import errors

includes range finder topic fix

	- ulog files are skipped from the analysis, if a corresponding .pdf file already exists
	- an overwrite flag can be set to analyse all the files

- Move check to proper location, out of the try catch block for OTP.
- Add Pixhawk specific check to notify users that want to flash
  px4fmu-v3_default on Pixhawks with older v4 bootloaders that do not
  support the silicon errata check.

This fixes the error below when using Python3:

  File "Tools/px_uploader.py", line 128, in
  __init__
      self.image.append('\xff')
      TypeError: an integer is required