GeezerVison

* origin/master: (27 commits)
  bpo-41428: Fix compiler warnings in unionobject.c (pythonGH-22388)
  bpo-41654: Fix compiler warning in MemoryError_dealloc() (pythonGH-22387)
  bpo-41833: threading.Thread now uses the target name (pythonGH-22357)
  bpo-30155: Add macros to get tzinfo from datetime instances (pythonGH-21633)
  bpo-33822: Update IDLE section of What's New 3.8 (pythonGH-22383)
  bpo-41844: Add IDLE section to What's New 3.9 (GN-22382)
  bpo-41841: Prepare IDLE News for 3.10 (pythonGH-22379)
  bpo-37779 : Add information about the overriding behavior of ConfigParser.read (pythonGH-15177)
  bpo-40170: Use inline _PyType_HasFeature() function (pythonGH-22375)
  bpo-40941: Fix stackdepth compiler warnings (pythonGH-22377)
  bpo-40941: Fix fold_tuple_on_constants() compiler warnings (pythonGH-22378)
  bpo-40521: Fix PyUnicode_InternInPlace() (pythonGH-22376)
  bpo-41834: Remove _Py_CheckRecursionLimit variable (pythonGH-22359)
  bpo-1635741, unicodedata: add ucd_type parameter to UCD_Check() macro (pythonGH-22328)
  bpo-1635741: Port _lsprof extension to multi-phase init (PEP 489) (pythonGH-22220)
  bpo-41513: Improve order of adding fractional values. Improve variable names. (pythonGH-22368)
  bpo-41816: `StrEnum.__str__` is `str.__str__` (pythonGH-22362)
  bpo-35764: Rewrite the IDLE Calltips doc section  (pythonGH-22363)
  bpo-41810: Reintroduce `types.EllipsisType`, `.NoneType` & `.NotImplementedType` (pythonGH-22336)
  bpo-41602: raise SIGINT exit code on KeyboardInterrupt from pymain_run_module (python#21956)
  ...

* origin/master: (113 commits)
  bpo-41773: Raise exception for non-finite weights in random.choices().  (pythonGH-22441)
  bpo-41873: Add vectorcall for float() (pythonGH-22432)
  bpo-41861: Convert _sqlite3 PrepareProtocolType to heap type (pythonGH-22428)
  bpo-41842: Add codecs.unregister() function (pythonGH-22360)
  bpo-41875: Use __builtin_unreachable when possible (pythonGH-22433)
  bpo-40105: ZipFile truncate in append mode with shorter comment (pythonGH-19337)
  bpo-41870: Use PEP 590 vectorcall to speed up bool()  (pythonGH-22427)
  [doc] Leverage the fact that the actual types can now be indexed for typing (pythonGH-22340)
  bpo-41861: Convert _sqlite3 cache and node static types to heap types (pythonGH-22417)
  bpo-41858: Clarify line in optparse doc (pythonGH-22407)
  Revert "Fix all Python Cookbook links (python#22205)" (pythonGH-22424)
  bpo-1635741: Port _bisect module to multi-phase init (pythonGH-22415)
  bpo-41428: Fix compiler warning in unionobject.c (pythonGH-22416)
  Fix logging error message (pythonGH-22410)
  bpo-39934: Account for control blocks in 'except' in compiler. (pythonGH-22395)
  bpo-41775: Make 'IDLE Shell' the shell title  (python#22399)
  bpo-41428: Fix compiler warnings in unionobject.c (pythonGH-22388)
  bpo-41654: Fix compiler warning in MemoryError_dealloc() (pythonGH-22387)
  bpo-41833: threading.Thread now uses the target name (pythonGH-22357)
  bpo-30155: Add macros to get tzinfo from datetime instances (pythonGH-21633)
  ...

Use Py_ssize_t type rather than int, to store lengths in
unionobject.c. Fix warnings:

Objects\unionobject.c(189,71): warning C4244: '+=':
conversion from 'Py_ssize_t' to 'int', possible loss of data

Objects\unionobject.c(182,1): warning C4244: 'initializing':
conversion from 'Py_ssize_t' to 'int', possible loss of data

Objects\unionobject.c(205,1): warning C4244: 'initializing':
conversion from 'Py_ssize_t' to 'int', possible loss of data

Objects\unionobject.c(437,1): warning C4244: 'initializing':
conversion from 'Py_ssize_t' to 'int', possible loss of data