I'm sorry, but the implentation you describe was not released until 2002. But I have investigated and totally agree with your comments about that implementation being based on pthreads. So why not help everyone out and (finally) update the docs so that the rest of us have clear guidelines on when they can use it.
Update: Caveat: assuming it is reliable enough. However, in regard to "clearly have nothing useful...please refrain" On second thoughts, someone with such arrogance is an unsafe contributor to the docs. To teach, one must first sincerely have sufficient character to learn. Apart from keenness to learn, a good programmer is also able to encourage his colleagues, rather than rubbish them. I wonder how this plays out in your teamwork.