[gnome-shell] Add xserver-xephyr to Debian/Ubuntu dependencies.

[Marina Zhurakhinskaya <marinaz src gnome org>]

commit ac64e86932acdb7aff715ea1f5f56f07010d2d20
Author: Marina Zhurakhinskaya <marinaz redhat com>
Date:   Wed Apr 22 16:17:50 2009 -0400

    Add xserver-xephyr to Debian/Ubuntu dependencies.
    
    This is needed to be able to start the shell in Xephyr.
---
 tools/build/gnome-shell-build-setup.sh |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/tools/build/gnome-shell-build-setup.sh b/tools/build/gnome-shell-build-setup.sh
index c9ed61d..66b2080 100755
--- a/tools/build/gnome-shell-build-setup.sh
+++ b/tools/build/gnome-shell-build-setup.sh
@@ -63,6 +63,7 @@ if test x$system = xUbuntu -o x$system = xDebian ; then
     libdbus-glib-1-dev libgconf2-dev libgtk2.0-dev libffi-dev \
     libgnome-menu-dev libgnomeui-dev librsvg2-dev libwnck-dev libgl1-mesa-dev \
     mesa-common-dev python-dev libreadline5-dev xulrunner-dev \
+    xserver-xephyr \
     ; do
       if ! dpkg_is_installed $pkg; then
         reqd="$pkg $reqd"