d/patches: Add patch to disable hardware acceleration

It seems to be broken with recent versions of WebKitGTK, especially on X11. Needs further testing and possibly a bug report against WebKit itself.

This is how it is currently fixed in the upstream version of devhelp: https://gitlab.gnome.org/GNOME/devhelp/-/commit/e6c644683fbb34ac4ceb31150ef20a2536512149

https://phabricator.apertis.org/T9292

debian/apertis/copyright

+Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
+
+Files: contrib/*
+Copyright: 2004, Marc Britten <mbritten@monochromatic.net>
+License: GPL-2+
+
+Files: data/*
+Copyright: 2001, Johan Dahlin <zilch.am@home.se> and Copyright2015 Frederic Peters <fpeters@0d.be>.
+License: GPL
+
+Files: debian/*
+Copyright: 2001 - 2003 Mikael Hallendal <micke@imendio.com>,
+           2001 - 2003 CodeFactory AB,
+           2004 - 2008 Imendio AB,
+           2008 Sven Herzberg
+           2010 Lanedo GmbH
+License: GPL-2+
+
+Files: debian/devhelp.1
+Copyright: 2001, Johan Dahlin <zilch.am@home.se>.
+ 2000, 2001, The Free Software Foundation
+License: GPL
+
+Files: debian/tests/libdevhelp-dev
+Copyright: 2020, Simon McVittie
+ 2020, Collabora Ltd.
+License: GPL-2+
+
+Files: plugins/*
+Copyright: 2008, Jannis Pohlmann <jannis@xfce.org>
+License: GPL-3+
+
+Files: plugins/gedit-plugin/devhelp.py
+Copyright: 2011, Red Hat, Inc.
+ 2006, Imendio AB
+License: GPL-3+
+
+Files: devhelp/* devhelp/devhelp.h devhelp/dh-assistant-view.c devhelp/dh-assistant-view.h devhelp/dh-book-list-builder.c devhelp/dh-search-bar.c devhelp/dh-web-view.c devhelp/dh-book-list-builder.c devhelp/dh-search-bar.c devhelp/dh-web-view.c devhelp/dh-book-list-builder.c devhelp/dh-search-bar.c devhelp/dh-web-view.c devhelp/dh-book-manager.c devhelp/dh-book-manager.h devhelp/dh-book-tree.c devhelp/dh-book-tree.h devhelp/dh-book.c devhelp/dh-book.h devhelp/dh-error.c devhelp/dh-error.h devhelp/dh-keyword-model.h devhelp/dh-error.c devhelp/dh-error.h devhelp/dh-keyword-model.h devhelp/dh-error.c devhelp/dh-error.h devhelp/dh-keyword-model.h devhelp/dh-init.c devhelp/dh-init.h devhelp/dh-keyword-model.c devhelp/dh-link.c devhelp/dh-link.h devhelp/dh-parser.c devhelp/dh-parser.h devhelp/dh-settings.c devhelp/dh-settings.h devhelp/dh-settings.c devhelp/dh-settings.h devhelp/dh-sidebar.c devhelp/dh-sidebar.h devhelp/dh-tab-label.c devhelp/dh-util-lib.c devhelp/dh-util-lib.h devhelp/future/* help/* help/C/* help/C/index.page help/C/search.page help/hu/* help/it/* help/pl/* help/sv/* plugins/gedit-plugin/* src/* src/dh-app.c src/dh-app.h src/dh-assistant.c src/dh-assistant.h src/dh-assistant.c src/dh-assistant.h src/dh-assistant.ui src/dh-main.c src/dh-preferences.c src/dh-preferences.h src/dh-preferences.ui src/dh-util-app.c src/dh-util-app.h src/dh-window.c src/dh-window.h src/dh.gresource.xml src/meson.build unit-tests/* unit-tests/meson.build unit-tests/test-completion.c unit-tests/meson.build unit-tests/test-completion.c unit-tests/test-search-context.c
+Copyright: 2001 - 2003 Mikael Hallendal <micke@imendio.com>,
+ 2001 - 2003 CodeFactory AB,
+ 2004 - 2008 Imendio AB,
+ 2008 Sven Herzberg
+ 2010 Lanedo GmbH
+License: GPL-2+
+ This package is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+ .
+ This package is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ GNU General Public License for more details.
+ .
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <https://www.gnu.org/licenses/>
+ .
+ On Debian systems, the complete text of the GNU General Public
+ License version 2 can be found in "/usr/share/common-licenses/GPL-2".