Gtk::Adjustment: Deprecate changed() and value_changed()
Gtk::Adjustment: Deprecate changed() and value_changed()

* gtk/src/adjustment.hg: Deprecate changed() and value_changed().
The corresponding gtk+ functions have been deprecated.

johne53/MB3Gtkmm,johne53/MB3Gtkmm,GNOME/gtkmm,johne53/MB3Gtkmm,GNOME/gtkmm,GNOME/gtkmm,GNOME/gtkmm