Make it possible to build KWin without libxcb
Now that we have Wayland around, there's a whole branch of dependencies that shouldn't be necessary anymore. This allows to build KWin without all of it, allowing us to have a much more compact alignment for cases where all the legacy software isn't necessary anymore.
Signed-off-by: Victoria Fischer victoria.fischer@mbition.io
Edited by Aleix Pol Gonzalez