[issue33922] Enforce 64bit Python by Launcher

[Robert]

New submission from Robert <lma at posteo.de>:

When using the Python Launcher "py.exe", it uses 64bit by default and I can enforce using 32bit. 

But there is no way to enforce 64bit. If I run "py -3.6" the actual called interpreter depends on the interpreter versions installed on my system. 

Thus "py -3.6-64" is missing. 
This is important if 64bit features are required.

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components: Windows
messages: 320127
nosy: mrh1997, paul.moore, steve.dower, tim.golden, zach.ware
priority: normal
severity: normal
status: open
title: Enforce 64bit Python by Launcher
type: enhancement

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue33922>
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