Rewrote mm_map_sanitize(). The code is naive in places, but very simple to understand and covers the case of multiple regions overlapping another region.
Rewrote mm_map_sanitize(). The code is naive in places, but very simple
to understand and covers the case of multiple regions overlapping
another region.

grahamedgecombe/arc,grahamedgecombe/arc,grahamedgecombe/arc