* demos/graph/region_adjacency_graph.cc: do not draw the vertex
	associted to the background.

	* doc/Makefile.am: Add borders to documentation images.

	* doc/ref_guide/ref_guide.tex,
	* doc/tutorial/tutorial.tex: Fix typos.

	* mln/make/box2d.hh,
	* mln/estim/min_max.hh.
	* mln/accu/stat/min_max.hh,
	* mln/core/concept/image.hh,
	* mln/core/routine/exact.hh: Reheader.

	* mln/data/compute.hh: Update doc.

	* mln/transform/hough.hh: Fix an unused variable.

	* mln/world/inter_pixel/is_separator.hh: Fix indentation add doc.

	* mln/world/inter_pixel/separator_to_pixels.hh: move debug code
	between NDEBUG guards.

git-svn-id: https://svn.lrde.epita.fr/svn/oln/trunk@4242 4aad255d-cdde-0310-9447-f3009e2ae8c0