by the program /sbin/splash_helper in the initrd and is called even
before /init.
* make-initrd.nix: allow a list of FSOs to be placed in the initrd,
with a symlink to each top-level FSO (e.g., /init,
/sbin/splash_helper, /etc/splash).
* make-initrd.nix: pre-create /proc, /dev and /sys, because
splash_helper needs them.
svn path=/nixu/trunk/; revision=7144
background. Each console can have a different theme. The mapping
from consoles to themes is specified in splash-themes.nix.
svn path=/nixu/trunk/; revision=7137