* mln/algebra/mat.hh (t): New method to transpose; replace...
	(trans): Remove procedure.
	(operator*): New overloads to improve interoperatibility
	between vectors and matrices.
	* mln/registration/get_rot.hh: Update.
	* mln/registration/icp.hh: Update.
	* mln/algebra/vec.hh (mat<n, 1, U>): New conversion op, ctor,
	and assignment; declarations only, definitions are... 
	* mln/algebra/mat.hh (mat<n, 1, U>): ...new.
	* tests/algebra/op_times.cc: New.

	* mln/labeling/compute.hh: Disable check to run on int_u.
	* mln/accu/sum.hh (take_as_init): New.
	* mln/accu/image/take_as_init.hh: New overload for image as arg.
	* tests/accu/image/take_as_init.cc: Augment.


git-svn-id: https://svn.lrde.epita.fr/svn/oln/trunk@3691 4aad255d-cdde-0310-9447-f3009e2ae8c0