[issue27980] Add better pythonw support to py launcher

[Eryk Sun]

Eryk Sun added the comment:

> Naturally pyw -h produces no output

It needs help: `pyw -h 2>&1 | more`. This sets the StandardOutput and StandardError as the write end of a pipe. more.com reads from the pipe and pages the help text to the console. 

Maybe this needs a new issue to have `pyw -h` pop up a message box with the help text.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue27980>
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