* libnautilus-extensions/nautilus-global-preferences.c:
(global_preferences_create_dialog),
(global_preferences_register_for_ui):
* libnautilus-extensions/nautilus-global-preferences.h:

Add preference for filename fonts.  Not wired up to anything yet.

* nautilus-widgets/nautilus-preferences-item.c,
(preferences_item_construct),
(preferences_item_create_font_family),
(enum_radio_group_changed_callback),
(boolean_button_toggled_callback), (font_family_changed_callback):
* nautilus-widgets/nautilus-preferences-item.h:

Add UI support for choosing a font family via preferences.

* nautilus-widgets/nautilus-string-picker.c:
(nautilus_string_picker_initialize),
(nautilus_string_picker_destroy),
(nautilus_string_picker_set_string_list),
(nautilus_string_picker_get_text),
(nautilus_string_picker_set_text):
* nautilus-widgets/nautilus-string-picker.h:

Add methods to set/get the current text.  Keep track of the string
list ourselves so that we dont have to peek/poke into internal
stuff in the gtkcombo.