. version 0.2.50 for the Linux Expo
 . --overlay and --fulscreen options (only work with --vout sdl)
 . the vlc exits after the end of the stream, which prevents from having
   to kill it and relaunch it during a presentation, just script it like :

      for i in ~/mpeg/* ; do vlc --fullscreen --overlay --vout sdl $i ; done


 Yes, I know the --overlay stuff is fucking ugly. But *I* am not the one
  who redefines vout_sys_t in an interface-related source file. I won't
  change it until the vout/intf is finished being rewritten.

 Additional information: if "--overlay --fulscreen" doesn't center your
  picture, try with your screen geometry, eg:
  "--overlay --fullscreen --width 1024 --height 768"