[issue37159] Have shutil.copyfile() use copy_file_range()

[Giampaolo Rodola']

Change by Giampaolo Rodola' <g.rodola at gmail.com>:


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nosy: +StyXman, desbma, facundobatista, martin.panter, ncoghlan, neologix, pablogsal, petr.viktorin, vstinner

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue37159>
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