Import patches-unapplied version 2.28 to ubuntu/oneiric

Imported using git-ubuntu import.

Changelog parent: 48e24c3f25

New changelog entries:
  * Switch ubuntu-dvd to ubuntu-usb and ubuntu-usb-live tasks.

debian/changelog

@@ -1,3 +1,9 @@
+livecd-rootfs (2.28) oneiric; urgency=low
+
+  * Switch ubuntu-dvd to ubuntu-usb and ubuntu-usb-live tasks.
+
+ -- Colin Watson <cjwatson@ubuntu.com>  Fri, 19 Aug 2011 10:56:49 +0100
+
 livecd-rootfs (2.27) oneiric; urgency=low
 
   * fix typo in abootimg call

live-build/auto/config

@@ -177,6 +177,11 @@ case $SUBPROJECT in
 esac
 
 case $PROJECT in
+	ubuntu-dvd)
+		add_task install ubuntu-usb
+		add_task live ubuntu-usb-live
+		;;
+
 	*-dvd)
 		add_task live "$PROJECT-live"
 		;;