* headers.mk: update distributed header list.

	* doc/ref_guide/ref_guide.tex: update reference to clone().

	* doc/tutorial/tutorial.tex: fix references.

	* mln/accu/center.hh: Fix meta accu.

	* mln/canvas/browsing/depth_first_search.hh: update functor interface.

	* mln/core/concept/function.hh: Introduce Function_i2b.

	* mln/debug/colorize.hh: call srand.

	* mln/fun/i2v/array.hh: update from_to overloads: add a special case
	for element[0].

	* mln/io/pgm/save.hh: Check if the image is compatible with pgm
	format.

	* mln/labeling/level.hh,
	* mln/labeling/regional_maxima.hh: avoid warnings.

	* mln/labeling/relabel.hh: update call to make::relabelfun.

	* mln/make/graph.hh: adjust extension to structural element.

	* mln/util/array.hh:
	  - add subject_impl specialization.
	  - Update from_to overloads: add a special case for element[0].

	* tests/accu/site_set/rectangularity.cc: add more tests.

	* tests/unit_test/unit-tests.mk: update unit test list.

git-svn-id: https://svn.lrde.epita.fr/svn/oln/trunk@3569 4aad255d-cdde-0310-9447-f3009e2ae8c0