(Only the first 10 of 15 ports in this commit are shown above. )
Add a port of Mitsuba, a research-oriented rendering system in the style
of PBRT, from which it derives much inspiration. Written in portable C++,
it implements unbiased as well as biased techniques, and contains heavy
optimizations targeted towards current CPU architectures.
Collada importer and CPU affinity are currently not supported on FreeBSD.