- Merge the whole /etc/alsa/pcm/pulseaudio.conf stuff into
/etc/alsa/pulse-default.conf, because the former is practically always
ignored, since it is not referenced for inclusion by any other
configuration file fragment (#251943) The other fragments installed in
/etc/alsa/pcm/ are useless, too. But since we are in a freeze and they
are not that important, I am not fixing this now.