Showing tooltips on top of a transient popup does not work
out well, and is not really necessary here. At the same time,
remove the unnecessary repetitions of properties. In particular,
setting the label of the buttons here defeats the scale buttons
use of symbolic icons.
https://bugzilla.gnome.org/show_bug.cgi?id=723181
It seems that alternate implementations of GtkFileChooserWidget
never materialized. The split between GtkFileChooserWidget and
GtkFileChooserDefault is awkward. The immediate problem is that
it makes it difficult to document the keybinding signals. So it
makes sense to drop the abstraction and just have one thing.
https://bugzilla.gnome.org/show_bug.cgi?id=723157
Add printer_compare() function for comparing printers according
to their names and locations. It is possible to search by multiple
keys separated by space or tabulator using logical conjunction.
Based on patch by William Hua.
https://bugzilla.gnome.org/show_bug.cgi?id=692931
