svc/squashdir-mount.{init,conf}d: update: the service become abnormaly slow, so, dependency are simplified
usr/lib/mkinitramfs-ll/functions: squashd() fix
init: set SQUASHDIR default to /ausf, because /var could be on a separate FS
svc/sdr.{ba,z}sh: set sqfsdir default to /aufs, because /var could be on a separate FS
README.textile: update isquashd to avoid leading backslash / even if it is supported
init: removed opt from SQUASHD default
ChangeLog: added squashdir entry