Gtk::TreeView: Deprecate property_rules_hint()

* gtk/src/treeview.hg: Deprecate property_rules_hint() and the corresponding
set and get methods. They are deprecated in gtk+.
Take description of Gtk::FileChooser::get_current_folder() from gtk+

* gtk/src/gtk_docs_override.xml: Remove the description of
gtk_file_chooser_get_current_folder(), i.e. let gmmproc take it from
gtk_docs.xml. Bug #734570.
demos: Remove calls to deprecated TreeView::set_rules_hint().

There is no replacement.
Regenerate *_enums.defs
Regenerate *_extra.defs
Regenerate *_methods.defs
Regenerate *_docs.xml
3.13.7
Popover: Ignore a private method.
Application: Add some new methods.

* gtk/src/application.hg: Add get_actions_for_accel(),
  prefers_app_menu(), and get_menu_by_id().
* tools/m4/convert_gtk.m4: Add conversions for GMenu.
Deprecate Gtk::StatusIcon which is deprecated in gtk+

* gtk/src/filelist.am: Move statusicon.hg to gtkmm_files_deprecated_hg.
* gtk/src/statusicon.hg: Add _IS_DEPRECATED.
Merge branch 'master' of git://git.gnome.org/gtkmm