* text/merging.hh: Change merge rules and improve integration with
	Scribo line structures.

	* primitive/internal/rd.hh: New.

	* binarization/sauvola_ms.hh: Add a missing include.

	* binarization/sauvola_threshold.hh: Remove debug and useless
	comments.

	* preprocessing/unskew.hh: Fix invalid guards.

	* primitive/extract/components.hh: Fill image extension.

	* primitive/extract/lines_pattern.hh: Adjust and fill image
	extension.

	* primitive/extract/lines_v_thick.hh: Fix traces.

	* preprocessing/denoise.hh,
	* preprocessing/denoise_bg.hh,
	* preprocessing/denoise_fg.hh,
	* preprocessing/homogeneous_contrast.hh,
	* preprocessing/rotate_90.hh: New routines.

	* fun/v2b/label_to_bool.hh: New function.

	* tests/preprocessing/Makefile.am,
	* tests/preprocessing/rotate_90.cc: New test.

	* 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.

	* debug/bboxes_enlarged_image.hh,
	* debug/looks_like_a_text_line_image.hh,
	* debug/mean_and_base_lines_image.hh: New routines.

	* debug/alignment_decision_image.hh,
	* debug/decision_image.hh,
	* debug/save_bboxes_image.hh: Update code according to last
	changes in core classes.

	* debug/usage.hh: Make the description optional.

	* core/component_info.hh,
	* core/component_set.hh: Add new methods and an output operator.

	* core/line_info.hh: Add new methods and improve stats computation.

	* core/line_set.hh: Add new methods.

	* core/macros.hh: Add more specific macros.

	* core/tag/component.hh,
	* core/tag/line.hh: Add output operators.

	* core/object_groups.hh,
	* core/object_links.hh: Share internal data using a tracked
	pointer.

	* src/text/Makefile.am: New target.

	* src/text/pbm_recognition.cc: New.

	* text/recognition.hh: Add an overload taking an image as
	argument.

	* subsampling/integral.hh: New. Compute a subsample image and an
	integral image at the same time.

	* text/merging.hh: New.

	* src/Makefile.am,
	* src/binarization/Makefile.am,
	* src/preprocessing/Makefile.am: Add new targets.

	* src/preprocessing/denoising.cc: New.

	* src/preprocessing/split_bg_fg.cc: Fix usage.

	* src/text_in_article.cc,
	* src/text_in_photo_ppm_fast.cc: Update code according last
	changes in core classes.

	* src/text_in_photo_ppm_fast_2.cc: New example.

	* binarization/sauvola_ms.hh: Remove a useless include.

	* debug/usage.hh: Move description output.

	* io/xml/save_text_lines.hh: Fix invalid xml output.

	* primitive/link/internal/link_ms_dmax_ratio_base.hh,
	* primitive/link/internal/link_single_dmax_ratio_base.hh: update
	distance criterion.

	* scribo.mk: Change compilation flags.

	* src/afp/components.hh: Merge data in only one array.

	* tests/filter/Makefile.am,
	* tests/filter/objects_with_holes.cc: New test.

	* text/clean.hh: use upsampling::hq4x instead of upsampling::hq2x.

	* debug/decision_image.hh,
	* debug/save_linked_bboxes_image.hh,
	* draw/bounding_boxes.hh,
	* estim/object_groups_v_thickness.hh,
	* filter/common/objects_photo.hh,
	* filter/internal/compute.hh,
	* filter/object_groups_size_ratio.hh,
	* filter/object_groups_small.hh,
	* filter/object_groups_v_thickness.hh,
	* filter/object_links_bbox_overlap.hh,
	* filter/object_links_bottom_aligned.hh,
	* filter/object_links_non_aligned_simple.hh,
	* filter/objects_thick.hh,
	* filter/objects_thin.hh,
	* filter/objects_with_holes.hh,
	* primitive/group/apply.hh,
	* primitive/group/from_double_link.hh,
	* primitive/group/from_single_link.hh,
	* primitive/link/internal/link_single_dmax_base.hh,
	* primitive/link/with_single_left_link.hh,
	* primitive/link/with_single_right_link.hh,
	* src/afp/link.hh,
	* src/afp/regroup.hh,
	* text/recognition.hh: Update the use of core classes. Replace the
	use of object_image with component_set.

	* scribo/core/component_info.hh,
	* scribo/core/component_set.hh,
	* scribo/core/line_info.hh,
	* scribo/core/line_set.hh,
	* scribo/core/object_groups.hh: Add more methods and constructors.

	* scribo/core/macros.hh: Add a new macro.

	* scribo/core/tag/line.hh: Add more enums.

	* demo/Makefile.am,
	* demo/demo.pro,
	* demo/demo.qrc,
	* demo/icons/document-open.png,
	* demo/icons/edit-find.png,
	* demo/icons/format-indent-more.png,
	* demo/icons/go-next.png,
	* demo/icons/image-x-generic.png,
	* demo/icons/list-add.png,
	* demo/icons/ocr.png,
	* demo/icons/text-x-generic.png,
	* demo/icons/view-refresh.png,
	* demo/icons/x-office-spreadsheet.png,
	* demo/src/main.cc,
	* demo/src/mainwindow.cc,
	* demo/src/mainwindow.hh,
	* demo/ui/mainwindow.ui: Move...

	* demo/review/Makefile.am,
	* demo/review/icons/document-open.png,
	* demo/review/icons/edit-find.png,
	* demo/review/icons/format-indent-more.png,
	* demo/review/icons/go-next.png,
	* demo/review/icons/image-x-generic.png,
	* demo/review/icons/list-add.png,
	* demo/review/icons/ocr.png,
	* demo/review/icons/text-x-generic.png,
	* demo/review/icons/view-refresh.png,
	* demo/review/icons/x-office-spreadsheet.png,
	* demo/review/review.pro,
	* demo/review/review.qrc,
	* demo/review/src/main.cc,
	* demo/review/src/mainwindow.cc,
	* demo/review/src/mainwindow.hh,
	* demo/review/ui/mainwindow.ui: ... here.

	* milena/mln/accu/center.hh: Add nsites() member.

	* milena/mln/accu/pair.hh: Provide access to the underlying accus.

	* milena/mln/accu/stat/variance.hh: Use literal::zero.

	* milena/mln/core/internal/labeled_image_base.hh: Indent.

	* milena/mln/core/site_set/box.hh: Rename center() as pcenter().

	* milena/mln/labeling/blobs_and_compute.hh: Return the array of
	accumulators.

	* milena/mln/labeling/colorize.hh: Make sure a color is not used
	twice in the same image.

	* milena/mln/labeling/compute.hh: Add a new overload.

	* milena/mln/transform/influence_zone_geodesic.hh: Fix a
	segmentation fault when an image had a border.

	* scribo/core/component_info.hh,
	* scribo/core/component_set.hh,
	* scribo/core/line_info.hh,
	* scribo/core/line_set.hh,
	* scribo/core/macros.hh,
	* scribo/core/object_groups.hh,
	* scribo/core/object_links.hh,
	* scribo/core/tag/anchor.hh,
	* scribo/core/tag/component.hh,
	* scribo/core/tag/line.hh: New core classes.

	* scribo/core/object_image.hh: Remove.

	* scribo/core/anchors.hh
	* scribo/primitive/extract/objects.hh: Rename as...

	* scribo/primitive/link/internal/compute_anchor.hh,
	* scribo/primitive/extract/components.hh: ... this.

	* scribo/draw/bounding_box_links.hh,
	* scribo/filter/object_links_bbox_h_ratio.hh,
	* scribo/filter/object_links_bbox_ratio.hh,
	* scribo/filter/objects_small.hh,
	* scribo/fun/v2b/objects_small_filter.hh,
	* scribo/primitive/group/apply.hh,
	* scribo/primitive/group/from_single_link.hh,
	* scribo/primitive/internal/find_root.hh,
	* scribo/primitive/internal/init_link_array.hh,
	* scribo/primitive/link/compute.hh,
	* scribo/primitive/link/internal/find_link.hh,
	* scribo/primitive/link/internal/find_several_links.hh,
	* scribo/primitive/link/internal/link_functor_base.hh,
	* scribo/primitive/link/internal/link_several_dmax_base.hh,
	* scribo/primitive/link/internal/link_single_dmax_base.hh,
	* scribo/primitive/link/internal/link_single_dmax_ratio_base.hh,
	* scribo/primitive/link/merge_double_link.hh,
	* scribo/primitive/link/with_single_left_link_dmax_ratio.hh,
	* scribo/primitive/link/with_single_right_link_bottom.hh,
	* scribo/primitive/link/with_single_right_link_dmax_ratio.hh,
	* scribo/primitive/link/with_single_right_link_top.hh: Make use of
	the new core classes.

	* scribo/debug/alignment_decision_image.hh,
	* scribo/debug/links_decision_image.hh,
	* scribo/debug/save_linked_bboxes_image.hh,
	* scribo/draw/bounding_box_links.hh: Make use of anchor points to
	draw debug outputs.

	* scribo/filter/object_links_non_aligned_simple.hh: Handle new
	cases.

	* scribo/filter/object_links_left_aligned.hh,
	* scribo/filter/object_links_right_aligned.hh: New filters.

	* scribo/primitive/internal/find_left_link.hh,
	* scribo/primitive/internal/find_right_link.hh,
	* scribo/primitive/internal/is_invalid_link.hh: Remove.

	* scribo/primitive/link/internal/compute_anchor.hh,
	* scribo/primitive/link/internal/link_ms_dmax_base.hh,
	* scribo/primitive/link/internal/link_ms_dmax_ratio_base.hh,
	* scribo/primitive/link/internal/link_single_dmax_base.hh,
	* scribo/primitive/link/internal/link_single_dmax_ratio_base.hh,
	* scribo/primitive/link/with_single_down_link.hh,
	* scribo/primitive/link/with_single_left_link.hh,
	* scribo/primitive/link/with_single_left_link_dmax_ratio.hh,
	* scribo/primitive/link/with_single_right_link.hh,
	* scribo/primitive/link/with_single_right_link_dmax_ratio.hh,
	* scribo/primitive/link/with_single_up_link.hh: Introduce the
	anchor concept and make use of it.

	* scribo/src/afp/components.hh,
	* scribo/src/afp/link.hh,
	* scribo/src/afp/regroup.hh: New.

	* src/preprocessing/Makefile.am,
	* src/filter/Makefile.am,
	* src/debug/Makefile.am: Add new targets.

	* src/debug/show_info_median_inter_characters.cc,
	* src/debug/show_info_x_height.cc,
	* src/debug/show_links_single_down.cc,
	* src/debug/show_links_single_down_left_aligned.cc,
	* src/debug/show_links_single_down_right_aligned.cc,
	* src/debug/show_links_single_up.cc,
	* src/debug/show_links_single_up_left_aligned.cc,
	* src/debug/show_links_single_up_right_aligned.cc,
	* src/filter/objects_with_holes.cc,
	* src/filter/objects_with_holes_pgm.cc,
	* src/pbm_lines_in_doc.cc,
	* src/preprocessing/split_bg_fg_ms.cc,
	* src/text_in_article.cc,
	* src/text_in_photo_ppm_fast.cc: New tools.

	* src/debug/show_left_right_links_validation.cc: Rename as...
	* src/debug/show_links_left_right_links_validation.cc: ...this.

	* src/debug/show_links_bbox_h_ratio.cc: Add a missing argument.

	* scribo/binarization/sauvola_ms.hh,
	* scribo/binarization/sauvola_threshold.hh,
	* scribo/canvas/integral_browsing.hh,
	* scribo/src/binarization/sauvola_ms.cc,
	* scribo/src/binarization/sauvola_pgm.cc,x
	* scribo/subsampling/integral_single_image.hh: Cleanup and avoir
	warnings.

	* tests/Makefile.am,
	* tests/core/Makefile.am: Update build system.

	* tests/core/object_image.cc: New test.

	* filter/object_links_bottom_aligned.hh,
	* filter/object_links_center_aligned.hh,
	* filter/object_links_non_aligned_simple.hh,
	* filter/object_links_top_aligned.hh: Pass the proper dimension as
	routine argument.

	* binarization/sauvola_threshold.hh,
	* binarization/sauvola.hh: Use fun::v2v::rgb_to_int_u8.

	* binarization/sauvola_ms.hh: New. Sauvola multi-scale routine.

	* src/binarization/sauvola.cc: Make the window size a program
	argument.

	* src/binarization/sauvola_ms.cc: Use Sauvola multi-scale routine.

	* core/anchors.hh: New. Add anchor types.

	* filter/objects_thin.hh: Use filter::internal::compute.

	* primitive/link/internal/find_several_links.hh,
	* primitive/link/internal/find_link.hh,
	* primitive/link/compute.hh: Update functor interface in order to
	specify anchors.

	* primitive/link/compute_several.hh: Fix an invalid namespace.

	* primitive/link/internal/anchors_3.hh: Move...

	* primitive/link/internal/compute_anchor.hh: ... here.

	* primitive/link/internal/link_functor_base.hh: Use anchor type.

	* primitive/link/internal/link_several_dmax_base.hh: New.

	* primitive/link/internal/link_center_dmax_base.hh,
	* primitive/link/internal/link_center_dmax_ratio_base.hh: Removed.

	* primitive/link/with_several_right_links_overlap.hh: Fix includes.

	* primitive/link/with_single_right_link_bottom.hh,
	* primitive/link/with_single_right_link_top.hh,
	* primitive/link/with_single_left_link.hh,
	* primitive/link/with_single_right_link.hh: Use
	link_single_dmax_base functor.

	* src/debug/show_links_several_right_overlap.cc,
	* src/debug/show_links_single_left.cc,
	* src/debug/show_links_single_left_dmax_ratio.cc,
	* src/debug/show_links_single_right.cc,
	* src/debug/show_links_single_right_dmax_ratio.cc: Update functor
	interface.

	* mln/fun/v2v/all.hh: Include the new header.

	* mln/fun/v2v/rgb_to_int_u.hh: New.

	* mln/subsampling/antialiased.hh: New.