For the header only version, the global variable default_random no more exist => we need to replace all occurences of default_random by a call to the global function get_default_random().
As usual, no modification for the non header only version.
Merge Min_circle_2, Min_ellipse_2, Min_sphere_d, Min_annulus_d,
Min_sphere_of_spheres_d, Min_quadrilateral_2 and
Approximate_min_ellipsoid_d. The documentation from the part that is
in Matrix_search has also been moved here, but not the code. Add a new
don't submit that covers the old ones, combine the package_info
files. Examples and tests are still in separate folders. Merge them in
a separate step.