* mln/util/array.hh,
	* mln/io/pgm/save.hh: remove a wrong precondition.

	* mln/labeling/compute.hh: do not call next() anymore.

	* mln/linear/gaussian_directional_2d.hh: avoid a warning.

	* tests/core/image/safe_image.cc: remove invalid code.

	* tests/level/transform.cc: update invalid code. No implicit
	conversion allowed from morphers to concrete images.

	* tests/make/Makefile.am: remove duplicate test entry.

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

	* tools/area_flooding.cc: use edge_image and vertex_image.

git-svn-id: https://svn.lrde.epita.fr/svn/oln/trunk@3714 4aad255d-cdde-0310-9447-f3009e2ae8c0