* tests/erosion.cc: Rename as...
	* tests/morpho_erosion.cc: ...this.
	* mln/geom/pmin_pmax.hh: Fix.
	* mln/morpho/plus.hh: New.
	* mln/morpho/minus.hh: New.
	* mln/logical: New.
	* mln/logical/and.hh: New.
	* mln/logical/and_not.hh: New.
	* mln/logical/or.hh: New.
	* mln/morpho/includes.hh,
	* mln/morpho/gradient.hh,
	* mln/morpho/contrast.hh,
	* mln/morpho/top_hat.hh: Update.


git-svn-id: https://svn.lrde.epita.fr/svn/oln/trunk@1060 4aad255d-cdde-0310-9447-f3009e2ae8c0