After I got a compiler warning for a printf format in this file
(which I cannot reproduce anymore; for some reason g++ is usually
quite happy with all the errors in this file), I fixed all 'printf'
formats to match the type of their arguments as follows:

uint8_t         : %hhu
uint16_t        : %hu (or %hx)
uint32_t        : %u (or %x)
int16_t         : %hd
int and int32_t : %d
long int        : %ld

Since this file is C++, what we REALLY should be using is
ostream operator<<'s of course (type safe by design and faster
(compile time type matching, no need for format decoding)).

* Publishes LPE GPS epv and eph as estimator status.

* Adds timestamp

otherwise the battery estimator does not compute bat_v_empty_dynamic correctly

readdir_r is deprecated since glibc version 2.24 and glibc manual
recomends usage of readdir instead of readdir_r.
Replacing readdir_r by readdir will also not be a problem for Nuttx,
because readdir_r is using readdir and filling parameters with the
return information.

Signed-off-by: Otavio Pontes <otavio.pontes@intel.com>

* Use sorted to fix python3 build error

* Add drv_hrt.h include to Bebop df wrappers

This will make the build works in distros that have Python 3 as default
and will not break anything in distros that have Python 2 as default.

This reverts commit 2a90f7e9.

MAVLink: Cleanup of port handling, switch to MAVLink 2 if receiving MAVLink 2. Announce MAVLink 2 capability in autopilot_version message

commit

Flight test went well, merging.

Merging this as it is definitely more robust than what we have now.

* Change to sitl to allow no board rotation for gazebo.

* Fix typo in typhoon launch file and create config for lpe.

* Exit early on test failures

this allows selecting another range device such as a lidar by starting that app first