x/xkeyboard-config-2.35.1-noarch-2.txz: Rebuilt.
Perhaps upstream didn't mean to move these files (or perhaps we should have
recompiled everything that looks for these), but they did switch to meson,
and the 'xkb-base' option to set the data directory doesn't work. Anyway,
I've placed a symlink at /etc/X11/xkb and that fixes the problem.
Thanks to Petri Kaukasoina and LuckyCyborg.