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Updated examples and snapshot of wrappers to what I think is their final form. Fortran no longer uses a RuntimeObjects structure; instead it passes around an opaque handle directly to the Context.

Upgrade examples to track Peter's automatically-generated C and Fortran bindings. These are still using a snapshot of the wrappers, slightly hand modified, but they are much closer to the final ones now. When the automated ones are ready and part of the build, these checked-in ones will no longer be necessary.

Thanks to Chris, we now know that the Langevin friction parameter is in ONE OVER picoseconds, NOT picoseconds!!