PATCH: Add __PTHREAD_RWLOCK_INT_FLAGS_SHARED

[Roland McGrath]

> +#ifndef __PTHREAD_RWLOCK_INT_FLAGS_SHARED
> +# if __WORDSIZE == 64
> +#  define __PTHREAD_RWLOCK_INT_FLAGS_SHARED 1
> +# endif
> +#endif

This needs a comment explaining what the macro means.


Thanks,
Roland