[Patches] GNU pth thread library support

[Andy Dustman]

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This patch adds the ability for Python to use the GNU pth threading
library. pth is a non-preemptive user-space threading library. For more
information, see http://www.gnu.org/software/pth. It presently has only
been tested on Linux. And of course it's against current CVS...

Buglets: Some annoying compiler warnings about socketbits.h. The
configuration could probably be better: It may conflict if other threading
libraries (other than pthreads) are installed.

-- 
andy dustman       |     programmer/analyst     |      comstar.net, inc.
telephone: 770.485.6025 / 706.549.7689 | icq: 32922760 | pgp: 0xc72f3f1d
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of the Python software and its related documentation, or any
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whether or not to incorporate this contribution in the Python
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