* tests/morpho_opening_area.cc: New.
	* mln/core/concept/accumulator.hh (take_as_init): New.
	* mln/morpho/opening_attribute.hh: New.
	* mln/morpho/opening_area.hh: New.
	* mln/morpho/includes.hh: Add neighborhood.hh.
	* mln/canvas/morpho: New.
	* mln/canvas/morpho/algebraic_union_find.hh: New.
	* mln/accu/count.hh (result): New.
	* mln/util: New.
	* mln/util/pix.hh: New.


git-svn-id: https://svn.lrde.epita.fr/svn/oln/trunk@1088 4aad255d-cdde-0310-9447-f3009e2ae8c0