[contribution] C11 threads implementation for Unix and Windows environments

[Gkn Knc]

Hi,

I am actually working on C11 threads implementation for Unix and
Windows environments, and I would like to know if the GCC community
could be interested.

This is the github repository for my implementation :
https://github.com/eau-de-la-seine/c-standard-threads

I have implemented almost all the thrd_ and mtx_ functions (I need to
do more tests), only those two following functions are not implemented
yet : thrd_sleep and mtx_timed_lock (they are time related).

I would be glad to contribute. Best regards,