Clean up CMAES doxygen, rename parallel_number->nthreads.
Fix MSVC C warnings in CMAES.

Hopefully, these changes will be incorporated upstream by @nikohansen.
Remove duplicate warning suppression for cmaes.

I had added some CMake lines to suppress warnings in cmaes.c.
Sherm made a related fix directly to cmaes.c, so I'm removing the related CMake
lines.
Anticipate renaming readpara->cmas_readpara.
Anticipate renaming readpara->cmas_readpara.
Update c-cmaes from upstream PR's not yet merged.

We are waiting for 3 PR's to get merged into
[c-cmaes](https://github.com/CMA-ES/c-cmaes) (#6, #11, #12).

For the time being, we have merged those three PR's together, and are using
that version of c-cmaes here in simbody.
Silence cmaes.c warnings only on GCC.
Merge pull request #267 from chrisdembia/cmaes-prep-for-3.5

Cmaes prep for 3.5