This should hopefully eliminate confusion some people have over which X11.app is which.
Now BOTH are in /A/U/X11.app and we intelligently determine whether to execute our app_to_run
or launch the server. If arguments are given, we launch the server. Otherwise if we can
connect to an X DISPLAY, we execute app_to_run. Otherwise, we launch the server.
(cherry picked from commit e7026216ccaa8e4fb073800ba947c9909d4faada)
Jeremy Huddleston