* draw/bounding_box_links.hh,
	* primitive/internal/init_link_array.hh,
	* primitive/internal/is_link_valid.hh,
	* primitive/link/internal/link_single_dmax_base.hh,
	* src/afp/link.hh: Update the use of object_link class.

	* draw/bounding_boxes.hh,
	* filter/objects_with_holes.hh,
	* src/afp/regroup.hh: Update for_all macro.

	* estim/object_groups_v_thickness.hh,
	* filter/object_groups_small.hh,
	* filter/object_groups_v_thickness.hh,
	* text/recognition.hh: Update access to component_set.

	* filter/object_links_bbox_h_ratio.hh,
	* filter/object_links_bbox_overlap.hh,
	* filter/object_links_bbox_ratio.hh,
	* filter/object_links_bottom_aligned.hh,
	* filter/object_links_non_aligned_simple.hh,
	* filter/object_links_top_aligned.hh,
	* primitive/group/apply.hh,
	* primitive/group/from_single_link.hh,
	* primitive/link/merge_double_link.hh,
	* primitive/link/with_single_right_link_bottom.hh,
	* primitive/link/with_single_right_link_dmax_ratio.hh,
	* primitive/link/with_single_right_link_top.hh: Improve routine
	prototypes.

	* primitive/link/internal/link_functor_base.hh: Make use of
	separators if exist.