* mln/core/site_set/p_centered.hh: New.
	* mln/core/site_set/all.hh: Update.
	* mln/core/image/extended.hh: New.
	* mln/core/image/extension_fun.hh,
	* mln/core/image/extension_ima.hh,
	* mln/core/image/extension_val.hh (ch_value): New.
	The extension is propagated to a concrete type iff it can
	work.
	(todo): New.
	* mln/core/image/image1d.hh,
	* mln/core/image/image3d.hh (line_piter): De-activate cause it
	does not work yet.
	* mln/core/point.hh (point): Add explicit to the 1D ctor.
	* mln/level/sort_psites.hh: Update.
	* mln/border/fill.hh,
	* mln/border/mirror.hh: Update.
	* mln/fun/i2v/array.hh: New.
	* mln/win/all.hh: Update.
	* mln/win/multiple.hh (i_): Fix warning.
	* doc/examples/tuto_bis.cc: Update.


git-svn-id: https://svn.lrde.epita.fr/svn/oln/branches/cleanup-2008@2281 4aad255d-cdde-0310-9447-f3009e2ae8c0