* oln/core/gen/topo_bbox.hh (oln::topo_bbox_<point>)
	* oln/core/gen/topo_lbbox.hh (oln::topo_lbbox_<point>): Ensure
	parameter point is an oln::abstract::point.


git-svn-id: https://svn.lrde.epita.fr/svn/oln/trunk@621 4aad255d-cdde-0310-9447-f3009e2ae8c0