Set --chroot-filesystem option if IMAGEFORMAT is ext2 or ext3.

debian/changelog

@@ -2,6 +2,7 @@ livecd-rootfs (2.5) UNRELEASED; urgency=low
 
   * Pass correct IMAGEFORMAT through to live-build from BuildLiveCD.
   * Add Lubuntu support.
+  * Set --chroot-filesystem option if IMAGEFORMAT is ext2 or ext3.
 
  -- Colin Watson <cjwatson@ubuntu.com>  Wed, 15 Jun 2011 10:21:08 +0100
 

live-build/auto/config

@@ -50,7 +50,7 @@ BINARY_REMOVE_LINUX=:
 
 case $IMAGEFORMAT in
 	ext2|ext3)
-		OPTS="${OPTS:+$OPTS }--initramfs none"
+		OPTS="${OPTS:+$OPTS }--initramfs none --chroot-filesystem $IMAGEFORMAT"
 		add_package live jasper
 		;;