Just a heads up:

I committed some changes to libpthread that affect how synchronization is
done. The chages boil down to: improve performance quite a bit and fix a
potential race that could be caused by detaching a thread.

In doing this I've gone over all the possible cases for synchronization
again and I haven't found any problems beyond the one that I fixed. I'll be
spending the next couple of days looking into this (disclaimer: I haven't
started working full time on NetBSD).

Thanks,
Andrew