Log Message:
cliqz: update to 1.29.0

- Removes obsolete patches no longer applicable to 1.29.0.
- Adds a patch to support building cliqz from clang base in NetBSD.
- No longer uses gcc in the build process.

Changes since 1.28.2:

Merge with Firefox 69.0.1

Committed during freeze as it's a security fix to a leaf package. ok maya@