* mln/canvas/browsing/dir_ricard51.hh: Rename as...
	* mln/canvas/browsing/dir_struct_elt_incr_update.hh: ...this, Document.
	* mln/canvas/browsing/directional.hh: Document.
	* mln/canvas/browsing/fwd.hh: Document.
	* mln/canvas/browsing/snake_fwd.hh: Document.
	* tests/canvas/browsing/dir_struct_elt_incr_update.cc: New.
	* tests/canvas/browsing/directional.cc: New.
	* tests/canvas/browsing/fwd.cc: New.
	* tests/canvas/browsing/snake_fwd.cc: New.
	* tests/canvas/browsing: New.
	* tests/canvas: New.
	* tests/canvas_browsing_fwd.cc: Remove.

git-svn-id: https://svn.lrde.epita.fr/svn/oln/trunk@1495 4aad255d-cdde-0310-9447-f3009e2ae8c0