[M3devel] pthreads committed to git

[mika at async.caltech.edu]

Hi m3devel,

I just pushed---I think---the fixed version of ThreadPThread.m3 to github.
There is no m3commit email from this?

I (and I'm sure Tony too) am very curious to hear if this makes things
worse on any OS.  (E.g., if it causes the pthreads to freeze.)  It works
perfectly on my AMD64_LINUX system: fork, memory allocation, everything.

Now to figure out whether the garbage collector bits can be sped up a bit.

     Mika