[gl2ps] Artifacts generated by GL2PS_OCCLUSION_CULL option, and empty LaTeX output

[Olumide]

> 1. I've noticed that the GL2PS_OCCLUSION_CULL option appears to generate 
> unwanted artifacts in the form of a mesh edges in the PS and EPS 
> outputs, although no such mesh edge display option was enabled (I need 
> to use the GL2PS_OCCLUSION_CULL option in order to cut down the number 
> of faces in my out put file). I've include below a sample C source file 
> that produces this artifact. What can I do to avoid this problem (its a 
> slimmer version of gl2psSimpleTest).

I've taken a closer look at the svg output of the torus model and I see 
that the edges are in fact the evidence of OpenGL tessellating the 
model? How can I opt not to see this information? Also, why is it 
predominant when the GL2PS_OCCLUSION_CULL option is enabled?