profiles/*/pkglist{,-build}: update package lists.
functions/fs, stage-pool/*-unbind@.sh: do conditional umounts correctly, without leaving non-zero exit code.
profiles/main/stages: 2-install-main/3-configs/2-appearance: rip out.
profiles/kde/stages: 3-install-kde/3-configs/1-kde: install kde set of configs.
profiles/gpu-intel/stages: 3-install-hw-gpu-intel/4-patch: add 'video.use_native_backlight=1' to kernel cmdline.

This is just another stab on finding the silver bullet for backlight controlling
problem.

The final ditch would be adding
Option "Backlight" "intel_backlight"
to
/etc/X11/xorg.conf.d.
configs-shemakova: add a config set.