fix position handling in geoclue2 plugin

Origin: upstream, https://code.qt.io/cgit/qt/qtpositioning.git/commit/?id=70b7818e1fc585f8
Last-Update: 2021-11-10

The pre-existing code was incorrect due to the operation priority.
The result of the comparison was assigned to the variables, so they
were always initialized with 0 or 1 instead of real values.

Also use std::numeric_limits<double>::lowest(), because the altitude
can have a negative value (when we are below sea level).

Gbp-Pq: Name geoclue2_fix_position_handling.diff

make mapboxgl build on non-Linux platforms

Origin: upstream, https://github.com/mapbox/mapbox-gl-native/commit/5f031dfa56f28d60
Last-Update: 2020-01-08

Gbp-Pq: Name mapboxgl_thread_portability.diff

fix build on Debian GNU/Hurd

Forwarded: no
Last-Update: 2019-12-31

Gbp-Pq: Name hurd_geoclue.diff

remove some include paths to pick up system headers

Forwarded: not-needed
Last-Update: 2020-04-27

Gbp-Pq: Name use_system_dependencies.diff

qtlocation-opensource-src (5.15.2+dfsg-3) unstable; urgency=medium

  * Backport upstream patch to fix position handling in geoclue2 plugin
    (closes: #996040).
  * Update debian/watch: use format 4, and track only 5.15.x releases.
  * Bump Standards-Version to 4.6.0, no changes needed.

[dgit import unpatched qtlocation-opensource-src 5.15.2+dfsg-3]

Import qtlocation-opensource-src_5.15.2+dfsg-3.debian.tar.xz

[dgit import tarball qtlocation-opensource-src 5.15.2+dfsg-3 qtlocation-opensource-src_5.15.2+dfsg-3.debian.tar.xz]

Import qtlocation-opensource-src_5.15.2+dfsg.orig.tar.xz

[dgit import orig qtlocation-opensource-src_5.15.2+dfsg.orig.tar.xz]