* mln/fun/x2x/interpol/bilinear.hh,
	* mln/fun/x2x/interpol/linear.hh,
	* mln/fun/x2x/interpol/nneighbor.hh: Move ...
	* mln/fun/x2v/bilinear.hh,
	* mln/fun/x2v/linear.hh,
	* mln/fun/x2v/nneighbor.hh: ... here.

	* mln/fun/x2x/geom/composed.hh,
	* mln/fun/x2x/geom/translation.hh,
	* mln/fun/x2x/geom/rotation.hh: Move ...
	* mln/fun/x2x/composed.hh,
	* mln/fun/x2x/translation.hh,
	* mln/fun/x2x/rotation.hh: ... here.

	* mln/fun/x2p: New.
	* mln/fun/x2p/closest_point.hh: Add a functor that return the closest
	point of a vector x in a given p_array.

	* mln/registration/multiscale.hh: Fix use of p_array.
	* mln/registration/registration.hh: Make use of fun::x2p::closest_point.
	* mln/registration/icp.hh: Add buffers.


git-svn-id: https://svn.lrde.epita.fr/svn/oln/branches/cleanup-2008@2537 4aad255d-cdde-0310-9447-f3009e2ae8c0