Merging graphics branch

[John W. Eaton]

On  5-Jun-2008, Michael Goffioul wrote:

| On Thu, Jun 5, 2008 at 6:17 AM, John W. Eaton <jwe at bevo.che.wisc.edu> wrote:
| > I've noticed a few problems, but I thought it would be best to get the
| > code merged, then work on fixing the things I noticed.  I'll work on
| > fixing the things I can, or post questions in separate threads.
| 
| Could you please be more specific about the problems you noticed?
| I just look at one of your last changes, which removes unneeded
| references. AFAIK, this was intentional, because what I really want
| to modify is the "n" NDArray (which is assigned to vertexnormals in
| the end). By removing the references, "n" is never updated.

OK, it just looked strange to me.  I should have asked first.  Sorry
about that.  I'll undo the change.

Most of the other things I noticed were configuration and build
issues, and I'll send separate messages about them.

jwe