Re: [pcp] pcp updates: more multithreaded fixes and then some

["Frank Ch. Eigler" <fche@xxxxxxxxxx>]

Hi -

> - qa/449 fails reliably
> - qa/src/multithread4 is schizophrenic ... failing, not failing, segv, 
> depending on the pmDebug flags and/or running under gdb
> 
> I plan to wind back my tree to the state about a week ago and then try 
> to roll forward without any of these changes.  Sorry but this is not 
> working and is getting in my way.

I'm going to focus on pmns.c today, after reproducing some problems
here too; the calling patterns may require a nested lock.

- FChE