Revert squashfs change for ubuntu-touch; it may come in handy after all, since it's smaller.

debian/changelog

@@ -1,6 +1,5 @@
 livecd-rootfs (2.129) UNRELEASED; urgency=low
 
-  * Don't build a squashfs for ubuntu-touch images.
   * Disable zsync for ubuntu-touch images.
 
  -- Colin Watson <cjwatson@ubuntu.com>  Fri, 03 May 2013 10:35:43 -0700

live-build/auto/config

@@ -273,7 +273,6 @@ case $PROJECT in
 		export LB_BOOTSTRAP_INCLUDE='apt-transport-https gnupg'
 		OPTS="${OPTS:+$OPTS }--apt-recommends false"
 		OPTS="${OPTS:+$OPTS }--binary-filesystem ext4"
-		OPTS="${OPTS:+$OPTS }--chroot-filesystem none"
 		OPTS="${OPTS:+$OPTS }--compression gzip"
 		OPTS="${OPTS:+$OPTS }--swap-file-path SWAP.swap"
 		OPTS="${OPTS:+$OPTS }--swap-file-size 100"