Sync with distutils at e0787fa

[jaraco]

• Remove docstring in distutils
• Prefer partition for splitting a string.
• Remove readme
• Prefer relative imports for better portability.
• No need to save 'threshold' on the instance.
• Use monkeypatch to set log and threshold.
• Extract fixture for capturing logs in _util modules.
• Expand 'logs' fixture to support features needed by LoggingSilencer.
• Consolidate fixture for capturing logs. Removes LoggingSilencer.
• Prefer capsys to test.support.captured*
• Fix broken test
• Prefer caplog to mocking the logging interface.
• or maybe not
• Remove setting of dll_libraries in Mingw32CCompiler. One call superseded the other, and the result was redundant with what happens in the parent call.
• Short circuit when MSC version is not found.
• Prefer partition to find.
• Work with ints uniformally.
• Replace if/else with a lookup.
• Move lookup out of the function
• Prefer regex search to string manipulation.
• Use RangeMap to define the ranges in one place.
• Use try/except when assigning msc_ver.
• 👹 Feed the hobgoblins (delint).
• Re-paste RangeMap with newlines restored (unsure what made them disappear).
• Pin pytest to <7.2. Workaround for test_bdist_ext tests started failing with pytest 7.2 distutils#186.
• In TempdirManager, use pathlib and more_itertools to more simply write the text.
• Rewrite init/for/append loop as comprehension and if/else as tertiary statement.
• Replace bespoke logging facility with logging module, available since Python 2.3.
• Avoid use of the distutils.log module.
• Log to the root logger, as that's the one Setuptools patches/validates.

Summary of changes

Closes

Pull Request Checklist

• Changes have tests
• News fragment added in changelog.d/.
  (See documentation for details)