Rename old ubuntu-core tarballs to ubuntu-base, for consistency with

the changes already made to yakkety and the ubuntu-cdimage project.
LP: #1579950.

debian/changelog

@@ -1,3 +1,11 @@
+livecd-rootfs (2.408.1) xenial; urgency=medium
+
+  * Rename old ubuntu-core tarballs to ubuntu-base, for consistency with
+    the changes already made to yakkety and the ubuntu-cdimage project.
+    LP: #1579950.
+
+ -- Steve Langasek <steve.langasek@ubuntu.com>  Mon, 09 May 2016 17:00:19 -0700
+
 livecd-rootfs (2.408) xenial; urgency=medium
 
   * drop linux-firmware-raspi2, it does not actually contain driver

live-build/auto/config

@@ -168,7 +168,7 @@ if [ "$PREINSTALLED" = "true" ] && [ "$SUBPROJECT" != "wubi" ]; then
 		ubuntu-server)
 			add_package live oem-config-debconf ubiquity-frontend-debconf
 			;;
-		ubuntu-core|base|ubuntu-touch|ubuntu-pd|ubuntu-cpc|ubuntu-desktop-next)
+		ubuntu-core|ubuntu-base|base|ubuntu-touch|ubuntu-pd|ubuntu-cpc|ubuntu-desktop-next)
 			;;
 		*)
 			add_package live oem-config-gtk ubiquity-frontend-gtk
@@ -413,6 +413,10 @@ case $PROJECT in
 		OPTS="${OPTS:+$OPTS }--bootstrap-flavour=minimal"
 		;;
 
+	ubuntu-base)
+		OPTS="${OPTS:+$OPTS }--bootstrap-flavour=minimal"
+		;;
+
 	ubuntu-touch|ubuntu-pd)
 		if [ "$PROJECT" = "ubuntu-touch" ]; then
 			meta_package=ubuntu-touch
@@ -557,7 +561,7 @@ case $ARCH in
 esac
 
 case $PROJECT in
-	ubuntu-server|ubuntu-core|ubuntu-touch|ubuntu-pd)
+	ubuntu-server|ubuntu-core|ubuntu-base|ubuntu-touch|ubuntu-pd)
 		case $SUBPROJECT in
 			system-image)
 				# keep the kernel for the system-image build