wolf4sdl: Update TODO's, make compilation verbose

I don't think that manual downloads make sense. Any checksums won't be
reliable since there are many different versions (of both shareware and
retail versions), and there's a whole bunch of those files. It's
something that the user *should* do by hand to ensure compatibility. The
best way to fix this is to patch the program anyway (for ignoring case
as well), but their homepage is down!