[issue14102] argparse: add ability to create a man page

[Louie Lu]

Louie Lu added the comment:

Attachment is the poc of generating man page via `print_manpage`:

    $ ./python poc_2.py > output && man ./output

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Added file: http://bugs.python.org/file46812/poc_2.py

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue14102>
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