MapleMutexCreate creates a mutex that can be used to implement critical sections in external call code.  It returns an mutex identifier that is passed into MapleMutexLock and MapleMutexUnlock.

There are currently no options supported by the MapleMutexCreate, thus a Maple null should be passed for the options argument.  A Maple null can be obtained by calling ToMapleNULL.

The mutex identifier returned by MapleMutexCreate is compatible with the functions in the Threads[Mutex] package.  Thus mutexes created by MapleMutexCreate can be returned to Maple and used by Threads[Mutex][Lock] and Threads[Mutex][Unlock].

When a mutex is no longer needed it should be released by passing it into MapleMutexDestroy.