This patch adds support for splitting up numerical processing between multiple
parallel processor threads (or pthreads) using new functions "set_autopthread_targ"
and "set_autopthread_targ". This can improve processing performance (by greater than
2-4X in most cases) by taking advantage of multi-core and/or multi-processor machines.
See the new file Basic/Pod/ParallelCPU.pod for details.
This patch is against PDL 2.4.7 and is in git "format-patch" format