drive type support in gio

[Matthias Clasen <matthias clasen gmail com>]

Hey,

with glib 2.22 out of the way, we are going to look at adding some api
to learn more about the types of drives to gio. A proposal has been
posted in

https://bugzilla.gnome.org/show_bug.cgi?id=594649

It would be great to hear from you if this would be sufficient for
braseros needs, and if not, what is missing.


Thanks, Matthias