* mln/convert/from_to.hxx
	* mln/value/label.hh: add a missing from_to(int_u, label).

	* mln/core/alias/neighb3d.hh: add c4_3d().

	* mln/core/concept/function.hh
	* mln/labeling/regional_maxima.hh
	* mln/labeling/regional_minima.hh: fix warnings.

	* mln/util/timer.hh: fix unit test.

	* mln/value/rgb.hh: remove a useless exact().

git-svn-id: https://svn.lrde.epita.fr/svn/oln/trunk@3345 4aad255d-cdde-0310-9447-f3009e2ae8c0