sdlstub is autoloading again

I did some tracing and found that the foreign library was, in fact, getting loaded as it should. I then started working on the idea that placing my own library in between the initialisation might have screwed it up somehow. So I did some rearranging, as well as adding explicit dependencies between the libraries. I found the right incantations after about half an hour, and now... it works.

Next up is to finally try that uffi generation script of mine, and then start doing some real 3D programming.