* mln/core/internal/dpoints_base.hh: New.
	* mln/core/concept/doc/weighted_window.hh: New.
	* mln/core/w_window.hh
	(element, nelements): Rename as...
	(dp, ndpoints): ...these.
	(sym_): Add body.
	Update.
	* mln/core/window.hh (super_): Update.
	(qiter): Remove; obsolete.
	(point, dpoint, is_centered, delta): Remove; factored.
	* mln/core/dpoints_pixter.hh: Update.
	* mln/core/concept/weighted_window.hh
	(is_symmetric): Remove; too ambiguous.
	* mln/core/win/vline2d.hh: Update inheritance.
	* mln/core/win/hline2d.hh: Likewise.
	* mln/core/win/rectangle2d.hh: Likewise.
	(qiter): Remove; obsolete.


git-svn-id: https://svn.lrde.epita.fr/svn/oln/trunk@1045 4aad255d-cdde-0310-9447-f3009e2ae8c0