* core/concept/dmax_functor.hh,
	* primitive/link/internal/dmax_default.hh,
	* primitive/link/internal/dmax_functor_base.hh,
	* primitive/link/internal/dmax_width_and_height.hh,
	* primitive/link/internal/dmax_width_only.hh: New.

	* primitive/link/internal/link_single_dmax_ratio_base.hh,
	* primitive/link/with_single_left_link_dmax_ratio.hh,
	* primitive/link/with_single_right_link_dmax_ratio.hh: Make use of
	the new functors.