* fixed a crash when quitting VLC while scrolling the credits in the about window. Additionally, improved the help window's memory print slightly

Fix modules loading. Next time you potentialy break all of VLC, please compile and try the change before commiting.

Also some code simplifaction

Change demux2 capability values so the lua demux2 gets called as a last resort (2) right before the ps demux is forced (1).

* fixed 2 segfaults when switching categories within the preferences. The options for CONFIG_SUBCATEGORY and CONFIG_CATEGORY aren't displayed, yet.