2014-11-28-13.44.58: src/lib/x-kit/widget/gui/guiboss-imp.pkg (etc):  In hopes of improved clarity:  Renamed:   before_first_frame -> initialize_gadget,   start_of_frame -> redraw_gadget_request,   update_gadget_appearance -> redraw_gadget,   gadget_may_have_visibly_changed -> needs_redraw_gadget_request.