[docs] [issue12943] tokenize: add python -m tokenize support back

[Meador Inge]

Meador Inge <meadori at gmail.com> added the comment:

Updated patch which adds and documents a '-h,--help' option.  This option
was suggested during code review.

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Added file: http://bugs.python.org/file23196/issue12943-4.patch

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