[issue39794] Add --without-decimal-contextvar option to use just threads in decimal

[Stefan Krah]

Change by Stefan Krah <stefan at bytereef.org>:


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assignee:  -> skrah
components: +Extension Modules
stage:  -> needs patch
type:  -> behavior
versions: +Python 3.7, Python 3.8, Python 3.9

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue39794>
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