appimage: Build without OpenGL, EGL and fontconfig
* Makefile.am (EXTRA_DIST): Add patch. * docker/appimage/Dockerfile: Remove EGL, OpenGL and fontconfig devel packages. * patches-appimage/kcrash/ 0001-DRAFT-Do-not-use-OpenGL-if-it-is-not-available.patch: Add hack to build without OpenGL. * src/appimage/Makefile.am (appimage_pkg_qtbase_configure): Update confiugre flags. (appimage_pkg_poppler_configure): Use generic fontconfig. * src/Makefile.am (appimage_pkg_qtbase_configure): Move OpenGL flags together.
Checking with LDD the KF5 build did not use system libs
for OpenGL, EGL and fontconfig. To avoid any new dependencies
we also build without them. While OpenGL and EGL seem
obvious, if fontctonfig was not required for KF5, the
current build should work without it, too.