[arch-dev-public] Move from /opt to /usr

Hi, this is an old issue and I just talked to Jan about that. We both are all for that and will move gnome and xfce. Jan said kde needs some more investigation. It'll save us a whole lot of trouble in the long run. As far as xfce4 is concerned, 4.4.1 is expected to be there around the 9th of April. And I plan on using this to move over the whole repository. Just one more guess, when moving on to a newer repos layout, can we rename xfce4 to xfce, it's somewhat less limiting :P -T