Comment 8 for bug 956255

Let Gnome users complain at bugzilla.gnome.org. They removed the on place we could influence the behaviour of gio in a decent way. So instead, knowing this would make things harder for not-fully-Xfce users, I choose to make it work for us.

Make exo-open could be a bit more intelligent, if so, I can fix that, but if Gnome decides to not care about others, I fix it the ugly way.