Add mapimage type and update.
	
	* oln/core/gen/mapimage.hh: New.
	* oln/automatic/image_being_random_accessible.hh: New.
	* oln/core/abstract/topology_having_bbox.hh
	(bbox): New; mutable version.
	* oln/core/abstract/image.hh (has): Remove; this method
	is now specific to a sub-abstraction.
	* oln/core/abstract/image/mutability/hierarchy.hh
	(lvalue_t, psite_t): Update.
	(~image_being_mutable): Fix typo.
	(using): New; it allows disambiguation of overloading
	thru inheritance.
	* oln/core/abstract/image/accessibility/hierarchy.hh
	(has, has_large): Update.
	(include): Update.
	* oln/core/abstract/image/bbox/hierarchy.hh
	(bbox_t, point_t): Update.
	(bbox): Change return signature.
	(pmin, pmax): New.
	* oln/core/gen/topo_bbox.hh (impl_bbox): New.
	* oln/Makefile.am (nobase_oln_HEADERS): Update.



git-svn-id: https://svn.lrde.epita.fr/svn/oln/trunk@575 4aad255d-cdde-0310-9447-f3009e2ae8c0