fix compilation with Python 3.9: avoid passing encoding to json.load()
Origin: upstream, https://github.com/qtwebkit/qtwebkit/commit/
78360c01c796b626
Last-Update: 2020-11-23
Gbp-Pq: Name python_3.9.diff
do not attempt rendering PDF with Qt image plugin
Origin: upstream, https://github.com/qtwebkit/qtwebkit/commit/
0443d42b04e0f99c
Last-Update: 2020-09-13
Qt 5.15 added Qt PDF module which comes with imageformat plugin, which
allows rendering first page of PDF document as image.
Gbp-Pq: Name no_pdf_image_plugin.diff