squash of the following
kicad: makeFlags: optional -> optionals
kicad: remove -1 in version string, no more patch
should have been removed in a52e974cff
kicad: remove berce as maintainer
kicad: gtk3 -> wxGTK.gtk
use wxGTK.gtk rather than gtk3
add graphviz as doxygen wants it (no idea if doxygen is required...)
minor compilation warning
kicad: rearrange / sort inputs
separate optional deps and options
kicad: clear some configuration warnings
linux specific stuff that's wanted by something in config
kicad: fix opening bug report in firefox wayland
may be removed when kicad goes native?
7dc05fed4f