* tests/run_pset.cc: Fix and clean.
	* tests/README: Augment.
	* tests/erosion.cc: Clean.
	* mln/core/internal/run_pset.hh: Fix.
	* mln/core/concept/function.hh: Add explicit calls to cpy
	ctors.


git-svn-id: https://svn.lrde.epita.fr/svn/oln/trunk@1057 4aad255d-cdde-0310-9447-f3009e2ae8c0