UI freeze exception

[Carlos Soriano Sanchez <csoriano redhat com>]

Hello,

Even if it is late, I would like to ask for an UI freeze exception for https://bugzilla.gnome.org/show_bug.cgi?id=725939
The reason is that GtkFileChooser implemented it, but nautilus didn't. One of the points for 3.18 was to make consistent
the behavior between GtkFileChooser and Nautilus, and this is the last important item remaining.

Basically it adds an action bar when a search is performed in some remote location, indicating the user that the search is
being done non recursively. Here a screenshot:

Thanks,

Carlos Soriano