Merge branch 'main' into typewatch

* main: (38 commits)
  gh-98251: Allow venv to pass along PYTHON* variables to pip and ensurepip when they do not impact path resolution (GH-98259)
  Bpo-41246: IOCP Proactor avoid callback code duplication (#21399)
  bpo-46364: Use sockets for stdin of asyncio only on AIX (#30596)
  gh-98178: syslog() is not thread-safe on macOS (#98213)
  Mark all targets in `Doc/Makefile` as `PHONY` (GH-98189)
  gh-97982: Factorize PyUnicode_Count() and unicode_count() code (#98025)
  gh-96265: Formatting changes for faq/general (#98129)
  tutorial: remove "with single quotes" (#98204)
  gh-97669: Remove Tools/scripts/startuptime.py (#98214)
  signalmodule.c uses _PyErr_WriteUnraisableMsg() (#98217)
  gh-97669: Fix test_tools reference leak (#98216)
  gh-97669: Create Tools/patchcheck/ directory (#98186)
  gh-65046: Link to logging cookbook from asyncio docs (#98207)
  Formatting fixes in contextlib docs (#98111)
  gh-95276: Add callable entry to the glossary (#95738)
  gh-96130: Rephrase use of "typecheck" verb for clarity (#98144)
  Fix some incorrect indentation around the main switch (#98177)
  gh-98172: Fix formatting in `except*` docs (#98173)
  gh-97982: Remove asciilib_count() (#98164)
  gh-95756: Free and NULL-out code caches when needed (GH-98181)
  ...