Port the font chooser to just use harfbuzz

Matthias Clasen requested to merge wip/fontchooser-harfbuzz into master

With pango 1.44, we will be able to use pango_font_get_hb_font, and drop all the pangofc and freetype use.

This still needs some more work to find the coordinates of named instances.

Edited by Matthias Clasen

Merge request reports