Interfacing with c

Work on this new chapter is slowly coming to completion. I'm still checking it for errors in wording an clarity, but the structure and purposes are pretty much set. Will need to use this for teaching in a weeks time, so any and all feedback is appreciated.

Especially the sections about advantages and disadvantages of the individual techniques could use some review, since they may be quite biased and I would love to hear what others have to say about it.

I put the generated contents up at:

http://zetatech.org/scipy-lecture-notes/advanced/interfacing_with_c/interfacing_with_c.html