testing: Switch to Debian based guest images

Instead of extracting a downloaded Gentoo filesystem tree into a file
containing a reiserfs filesystem, create an ext3 filesystem inside a
sparse file, mount it and debootstrap an up-to-date Debian system. Use
this image as base for all UML guest images.

Also, drop support for the various consoles and use xterm
unconditionally.

testing/testing.conf

@@ -27,7 +27,6 @@ KERNELVERSION=`basename $KERNEL .tar.bz2 | sed -e 's/linux-//'`
 # Kernel configuration file
 KERNELCONFIG=$UMLTESTDIR/.config-3.5
 
-
 # Bzipped uml patch for kernel
 UMLPATCH=$UMLTESTDIR/ha-3.0.patch.bz2
 
@@ -91,12 +90,6 @@ USE_IFMAP="no"
 USE_CISCO_QUIRKS="no"
 USE_UNITY="yes"
 
-# Gentoo linux root filesystem
-ROOTFS=$UMLTESTDIR/gentoo-fs-20111212.tar.bz2
-
-# Size of the finished root filesystem in MB
-ROOTFSSIZE=850
-
 # Amount of Memory to use per UML [MB].
 # If "auto" is stated 1/12 of total host ram will be used.
 # Examples: MEM=64, MEM="128", MEM="auto"
@@ -105,6 +98,20 @@ MEM=96
 # Directory where the UML kernels and file system will be built
 BUILDDIR=$UMLTESTDIR/umlbuild
 
+# Logfile
+LOGFILE=$BUILDDIR/testing.log
+
+# Directory used for loop-mounts
+LOOPDIR=$BUILDDIR/loop
+
+# Base image settings
+ROOTFSSIZE=950
+ROOTFSSUITE=wheezy
+ROOTFSARCH=amd64
+ROOTFS=$BUILDDIR/debian-$ROOTFSSUITE-$ROOTFSARCH.img
+ROOTFSMIRROR=http://cdn.debian.net/debian
+ROOTFSPW=root
+
 # Filename of the built UML Kernel
 UMLKERNEL=$BUILDDIR/linux-uml-$KERNELVERSION
 
@@ -126,28 +133,15 @@ TZUML="Europe/Zurich"
 # Enable particular steps in the make-testing and
 # start-testing scripts
 #
+ENABLE_BUILD_BASEIMAGE="yes"
 ENABLE_BUILD_UMLKERNEL="yes"
-ENABLE_BUILD_SSHKEYS="yes"
-ENABLE_BUILD_HOSTCONFIG="yes"
 ENABLE_BUILD_UMLROOTFS="yes"
+ENABLE_BUILD_HOSTCONFIG="yes"
 ENABLE_BUILD_UMLHOSTFS="yes"
 ENABLE_START_TESTING="yes"
 ENABLE_DO_TESTS="no"
 ENABLE_STOP_TESTING="no"
 
-##############################################################
-# How to start the UMLs?
-#
-# Start the UML instance in KDE konsole (requires KDE)
-# UMLSTARTMODE="konsole"
-# Start the UML instance in a gnome-terminal (requires gnome)
-UMLSTARTMODE="gnome-terminal"
-# Start the UML instance in an xterm (requires X11R6)
-# UMLSTARTMODE="xterm"
-# Start the UML instance without a terminal window
-# but screen -r <host> can open a window anytime
-# UMLSTARTMODE="screen"
-
 ##############################################################
 # If set to "yes" only the tests stated at $SELECTEDTESTS
 # will be executed. (use "yes" or "no")