Rust bindings to the Memory Pool System

NOTE: This project is now inactive. It has serious bugs.

I no longer plan to use the MPS in DuckLogic.

This integration has proved difficult to debug with even the most trivial of examples. This is mostly because the MPS uses signals for memory barriers.

Furthermore, it seems difficult to use with zerogc. This is primarily because the client cannot use safepoints to manage when garbage collection occurs.

In the future, it is possible that I will try integration with the MPS again. If the performance prospects are good enough, I may even consider paying Ravenbrook to have them do the integration......

Now that the Memory Pool System has been re-licensed under the BSD 2-clause license, it is possible to freely redistribute it with DuckLogic.

NOTE: I kept this private for a copule days in June 2021, because I was exploring a proprietary integration with DuckLogic. Rest assured any future integration will stay in the public.