pango: Update to version 1.50.0

pango: Update to version 1.50.0

- v3 version has updated pango version
- Update from 1.30.1 (2012) to 1.50.0 (2021)
- Update of rootfile - Pango modules, engines, and config have been removed (#733882) in
   version 1.37.0 in 2014.
- pango now has dependencies of harfbuzz and fribidi so patches for these two are
   included in the following two patches for this series.
- make.sh modified to include
   build of these two packages before pango is built
- Build is done via meson/ninja now
- Changelog is too large to show here but the details can be found in the NEWS file in
   the source tarball.

Signed-off-by: Adolf Belka <adolf.belka@ipfire.org>
Reviewed-by: Michael Tremer <michael.tremer@ipfire.org>