[issue39533] Use `statx(2)` system call on Linux for extended `os.stat` information

[STINNER Victor]

Change by STINNER Victor <vstinner at python.org>:


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components: +Library (Lib)
nosy: +vstinner
versions: +Python 3.9

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue39533>
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