* mln/fun/l2l/all.hh
	* mln/fun/l2l/essential.hh: new headers.

	* mln/value/all.hh,
	* mln/accu/bbox.hh: Fix comments.

	* mln/fun/i2v/array.hh: add missing constructor implementation.

	* mln/value/essential.hh,
	* mln/value/aliases.hh,
	* mln/level/essential.hh,
	* mln/labeling/essential.hh: update includes.

	* mln/make/relabelfun.hh: Fix a bug. New component ids were not set
	correclty.

	* mln/value/label.hh: Fix a duplicate attribute.

	* mln/labeling/compute.hh,
	* mln/debug/colorize.hh: use label::next() instead of operator '+' to
	get the next label.

git-svn-id: https://svn.lrde.epita.fr/svn/oln/trunk@2944 4aad255d-cdde-0310-9447-f3009e2ae8c0