Functions min_dist_to_rectangle and max... have an overload with
std::vector<FT>& dists now. That is required for ortho searches, so
we have no backwards compatibility.
The values for extended internal nodes have also been changed.
the class Search_traits_adapter must use only Lvalue_property_map since
it uses the Cartesian_const_iterator from the base class which is usually
simply the pointer on the double in the point. If the point returned by
the property map is a temporaty, the iterator is invalid and its behavior
is undefined