bpo-39595: Improve zipfile.Path performance

[jaraco]

In jaraco/zipp#32, I learned that the zipfile.Path and zipp.Path objects were O(n) for joinpath and entries, causing O(n^2) complexity for other operations, including those used by importlib.metadata. This change incorporates those changes, released with zipp 1.1 and 2.1.

https://bugs.python.org/issue39595

[codecov]

Codecov Report

Merging #18406 into master will increase coverage by 0.00%.
The diff coverage is n/a.

@@ Coverage Diff @@ ## master #18406 +/- ## ========================================= Coverage 82.11% 82.12% ========================================= Files 1955 1955 Lines 588928 583715 -5213 Branches 44428 44436 +8 ========================================= - Hits 483611 479354 -4257  + Misses 95667 94715 -952  + Partials 9650 9646 -4 

Impacted Files	Coverage Δ
Lib/distutils/tests/test_bdist_rpm.py	30.00% <0.00%> (-65.00%)	⬇️
Lib/distutils/command/bdist_rpm.py	7.63% <0.00%> (-56.88%)	⬇️
Lib/test/test_urllib2net.py	76.92% <0.00%> (-13.85%)	⬇️
Lib/test/test_smtpnet.py	78.57% <0.00%> (-7.15%)	⬇️
Lib/ftplib.py	63.85% <0.00%> (-6.06%)	⬇️
Lib/test/test_ftplib.py	87.11% <0.00%> (-4.72%)	⬇️
Tools/scripts/db2pickle.py	17.82% <0.00%> (-3.97%)	⬇️
Tools/scripts/pickle2db.py	16.98% <0.00%> (-3.78%)	⬇️
Lib/test/test_socket.py	71.94% <0.00%> (-3.77%)	⬇️
Lib/distutils/tests/test_bdist_msi.py	56.25% <0.00%> (-3.75%)	⬇️
... and 335 more

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[bedevere-bot]

@jaraco: Please replace # with GH- in the commit message next time. Thanks!

[miss-islington]

Thanks @jaraco for the PR 🌮🎉.. I'm working now to backport this PR to: 3.8.
🐍🍒⛏🤖

[miss-islington]

I'm having trouble backporting to 3.8. Reason: 'Error 110 while writing to socket. Connection timed out.'. Please retry by removing and re-adding the needs backport to 3.8 label.

[miss-islington]

Thanks @jaraco for the PR 🌮🎉.. I'm working now to backport this PR to: 3.8.
🐍🍒⛏🤖

[bedevere-bot]

GH-18472 is a backport of this pull request to the 3.8 branch.