Bump default screen size to 1024x748; current mininum

Right now the mockup is 1280x800.  We don't fit at all well into
800x600.  This patch bumps us up by default to 1024x768 which is
the lowest we're going to work at for now, until we get some more
intelligent resizing.

svn path=/trunk/; revision=60

scripts/start-in-Xephyr

@@ -38,7 +38,7 @@ try:
     # Launch Xephyr
     xephyr = subprocess.Popen(["Xephyr", display,
                                "-auth", xauth_file,
-                               "-screen", "800x600",
+                               "-screen", "1024x748",
                                "-host-cursor"])
     os.environ['DISPLAY'] = display
     os.environ['XAUTHORITY'] = xauth_file