[Xorg_xkeyboard_config] Initialize XKB_CONFIG_ROOT [skip build]

[barche]

I also had to add julia_compat because of an error about experimental platforms, not sure if the skip build is still OK then @giordano ?

[giordano]

not sure if the skip build is still OK then

Not only [skip build] is not ok, as you're building for more platforms than before you must do a proper new build, but you also must change the version number: #2763.

[barche]

OK, so I think I'm going to bite the bullet and update this one and its dependencies first. Any objections to that? It seems most of the X11-related libs are affected, I have no idea if upgrading these will break binary compatibility, as it seems no compat bounds are set?

The other alternative is that I just filter out the experimental platform here (only armv6l-linux actually) and remove the julia_compat again.