Comment 4 for bug 327926

Ok, I'll commit a patch (discussed with upstream) for xfconf (it was merging channel is the wrong order, thus overriding settings). I'm going to upload soon. After that, I think we can ship /etc/X11/Xsession.d/70xubuntu_session and /etc/X11/Xsession.d/71mythbuntu_session (probably similar to /etc/X11/Xsession.d/60xdg_path-on-session from gdm) in xubuntu-default-settings and mythbuntu-default-settings, and eventually drop our patch that hardcodes these values from libxfce4util.