* tests/sort_points.cc: Rename as...
	* tests/level_sort_points.cc: ...this.
	Augment.
	* tests/labeling.cc: Rename as...
	* tests/labeling_foreground.cc: ...this.
	Update.
	* tests/labeling_regional_maxima.cc: New.
	* mln/convert/to_vec_p.hh: New.
	* mln/pw/image.hh (change_value): Use fixme.
	* mln/core/vec_p.hh (reserve, hook_): New.
	* mln/core/vec_p_piter.hh (vec_p_bkd_piter_): Code.
	* mln/level/sort_points.hh (sort_points): Rename as...
	(sort_points_increasing): ...this.
	(sort_points_decreasing): New.
	* mln/level/fill.hh: Add & to the C function arg; that fixes
	the behavior of icpc when calling fill with the literal 0.
	* mln/level/labeling.hh: Remove; obsolete because of
	labeling::level.
	* mln/linear/sobel.hh: Add FIXME.
	* mln/canvas/labeling.hh: New.
	* mln/labeling/flat_zones.hh: New.
	* mln/labeling/+foreground.hh: Remove.
	* mln/labeling/level.hh: New.
	* mln/labeling/foreground.hh: New.
	* mln/labeling/regional_minima.hh: New.
	* mln/labeling/base.hh: New.
	* mln/labeling/regional_maxima.hh: New.
	* mln/labeling/background.hh: New.


git-svn-id: https://svn.lrde.epita.fr/svn/oln/trunk@1068 4aad255d-cdde-0310-9447-f3009e2ae8c0