Backport of pthread fixes from 5.x to 6.0.

[Petri Helenius]

Daniel Eischen wrote:

>On Tue, 1 Feb 2005, Petri Helenius wrote:
>  
>
>
>They aren't (in userland) even in -current; they exist in perforce
>in a forked branch of libpthread.  You'll have to wait for that
>because it doesn't yet support all of the stuff that libpthread does.
>
>  
>
Is there a lot of other functionality being baggaged in the same branch 
/ patchset or is the mutex pptimization work mostly separate?

Pete