Patches improving tree view (multi-root and auto-follow)

[Jürg Billeter <j bitron ch>]

Hi

There were many discussions about improving the tree view to handle
multiple roots. I want to have something like this in nautilus 2.4, so
I've implemented a possible version.
See http://bugzilla.gnome.org/show_bug.cgi?id=62524

As a relating patch I've fixed the tree view so it automatically follows
the folder changes in the list view pane.
See http://bugzilla.gnome.org/show_bug.cgi?id=82884

It would be nice if I could get some feedback.

Regards,

Jürg
j bitron ch