If Walter simply releases a few small parts of SNN.lib, it's quite possible to use your own C runtime instead. And that will lower the executable size down to ~10 KB.
Impossible. You forget the D runtime, type info and all the crap from phobos that gets pulled in.
http://thecybershadow.net/d/mapview/view.php?id=4ee3af86c32f2
