[openbox] auto-starting xscreensaver

[Andrew Gallant]

> well I personally like to make my hardware last and running the screen saver will
> wear it out faster, so I'll stick to my cool black screen of nothingness and
> make my hardware last and keep my electric bill down too...

Newsflash: different people have different preferences.

> and no one can prove any valid reasons for it

I think they look cool. Therefore, there exists a valid reason for a
screen saver. QED.

- Andrew