* tests/accu/max_h.cc,
	* tests/accu/min_h.cc: Update.
	* mln/histo/data.hh: Add a new method nvalues.
	* mln/core/routine/ops.hh: delete trailing whitespace.
	* mln/accu/nil.hh,
	* mln/accu/min.hh,
	* mln/accu/count_adjacent_vertices.hh,
	* mln/accu/max.hh,
	* mln/accu/count.hh,
	* mln/accu/tuple.hh,
	* mln/accu/bbox.hh,
	* mln/accu/pair.hh,
	* mln/accu/median.hh,
	* mln/accu/median_alt.hh,
	* mln/accu/p.hh,
	* mln/accu/rank_high_quant.hh,
	* mln/accu/sum.hh,
	* mln/accu/v.hh,
	* mln/accu/rank_bool.hh,
	* mln/accu/volume.hh,
	* mln/accu/height.hh,
	* mln/accu/mean.hh,
	* mln/accu/internal/base.hh: Rename base_ to base.
	* mln/accu/max_h.hh,
	* mln/accu/min_h.hh,
	* mln/accu/histo.hh: Adapt to histo/data.
	* mln/value/int_u.hh: Update.


git-svn-id: https://svn.lrde.epita.fr/svn/oln/branches/cleanup-2008@2227 4aad255d-cdde-0310-9447-f3009e2ae8c0