Fixed calibration
archlinux compatibility
First, stupid, naive version of PX4 uploader, needs testing and cross-platform fixes. Compiles, ready for testing
Hacking on uploader
Merge branch 'master' of https://github.com/mavlink/qgroundcontrol into archlinux
Merge pull request #239 from thomasgubler/archlinux

archlinux compatibility
PX4 RC calibration (trim offsets) support
fix hardcoded start of fgfs and terrasync, use system environment variables for linux distro independence
First stab at JSBSim interface, compiling, operational, but needs the correct startup folders and arguments
Merge pull request #242 from thomasgubler/archlinux

fix hardcoded start of fgfs and terrasync, use system environment variables for linux distro independence
Working on sensor HIL
Potential Linux start fix
Merge branch 'master' of github.com:mavlink/qgroundcontrol
Finished sensor HIL, pending testing
Tiny typo fixes in HIL
Merge branch 'master' of github.com:mavlink/qgroundcontrol into sensor_hil
Merge branch 'sensor_hil' of github.com:mavlink/qgroundcontrol into sensor_hil
Expanded fields changed flags
Revert last change on new logfile structure and added nulling of buffer.

The reason for this is, because the last change in the file structure is buggy, it was only written the message length of the buffer to the file and missed to add the length for the timestamp.
For fixing this problem it would be possible to insert something like

len += sizeof(quint64);

after:

int len = mavlink_msg_to_send_buffer(buf+sizeof(quint64), &message);

But I think a consistent file structure has more adavatages for a logfile over a more compressed structure.
E.g. it would be necessary to go through all packages to proceed a jump during a replay.
Additional the LogPlayer was not updated during the last 7 month since the logfile structure was changed (even it was buggy)...

If filesize is really a problem I would recommend to change the logfile handling in a way of writting a temporary consistend
logfile and compress it afterwards (QCompress) like done by many programs
Merge pull request #244 from cehberlin/master

Fix/Revert problematic logfile structure changes