[docs] Translation of "Socket Programming HOWTO"

[David Villa]

Hi:

I translated the "Socket Programming HOWTO"[1] some years ago [2]. I
would know the exact license of that document because I would extend
the translation with my own content and publish it.

Thank you.

[1] http://docs.python.org/dev/howto/sockets.html
[2] http://wiki.python.org/moin/HowTo/Sockets