[docs] [issue2716] Document license under which audioop is used

[Terry J. Reedy]

Changes by Terry J. Reedy <tjreedy at udel.edu>:


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assignee:  -> docs at python
components: +Documentation
nosy: +docs at python
priority: high -> normal
title: Reimplement audioop because of copyright issues -> Document license under which audioop is used

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue2716>
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