Freeze break request for Nautilus

[Cosimo Cecchi <cosimoc gnome org>]

Hi,

I would like to commit two little patches for Nautilus search:
- https://bugzilla.gnome.org/show_bug.cgi?id=437626 - searching for
hidden files works already in most cases in git master; the attached
patch should fix it for the rest of the cases.
- https://bugzilla.gnome.org/show_bug.cgi?id=684378 - this fixes a
crasher in the shell search provider when unmounted volumes are
present on the system.

Patches are attached to the bugs.

Thanks!
Cosimo