Simplify X session startup. This CL skips the typical Xsession

stuff that parses a bunch of files in favor of just starting
our session script under a console-kit session. We don't need
any of the typical Xsession start stuff and this is simpler to
understand. Since we don't use Xsession.d, we no longer need
to delete certain files from that directory.

The CL also has the login_manager package install our own slim.conf
so that we don't need to be modifying the default one using sed
from customize_rootfs and the login_manager maintainer scripts.

Review URL: http://chromereview.prom.corp.google.com/1188025


git-svn-id: svn://chrome-svn/chromeos/trunk@209 06c00378-0e64-4dae-be16-12b19f9950a1

customize_rootfs.sh

@@ -435,24 +435,6 @@ rm -f /etc/init/rc.conf
 rm -f /etc/init/rcS.conf
 rm -f /etc/init/rc-sysinit.conf
 
-# Start X on vt01
-sed -i '{ s/xserver_arguments .*/xserver_arguments -nolisten tcp vt01/ }' \
- /etc/slim.conf
-
-# Clean out unneeded Xsession scripts
-XSESSION_D="/etc/X11/Xsession.d"
-KEEPERS="20x11-common_process-args 51x11-chromeos-set-startup \
-         90consolekit 99x11-common_start"
-for script in ${KEEPERS}
-do
-  mv "$XSESSION_D"/"$script" /tmp
-done
-rm -rf "$XSESSION_D"/*
-for script in ${KEEPERS}
-do
-  mv /tmp/"$script" "$XSESSION_D"
-done
-
 # By default, xkb writes computed configuration data to
 # /var/lib/xkb. It can re-use this data to reduce startup
 # time. In addition, if it fails to write we've observed