* mln/value/set.hh: Rename as...
	* mln/value/internal/iterable_set.hh: ...this.
	(the): Remove.
	(E): New.
	* mln/value/set.hh: New.

	* tests/vset.cc,
	* tests/histo.cc,
	* TODO,
	* mln/core/macros.hh,
	* mln/core/trait/is_lowq.hh,
	* mln/core/fimage.hh,
	* mln/core/image2d_b.hh,
	* mln/level/naive/median.hh,
	* mln/level/was.median.hh,
	* mln/level/fast_median.hh,
	* mln/level/transform.hh,
	* mln/level/median.hh,
	* mln/accu/histo.hh,
	* mln/accu/median.hh,
	* mln/accu/median_alt.hh,
	* mln/value/props.hh,
	* mln/value/cast.hh,
	* mln/value/int_u.hh: Update.


git-svn-id: https://svn.lrde.epita.fr/svn/oln/trunk@1036 4aad255d-cdde-0310-9447-f3009e2ae8c0