[3.11] Add information about negative  indexes to sequence datamodel doc (GH-110903) (#117239)

Co-authored by Terry Jan Reedy
(cherry picked from commit c2276176d543a2fc2d57709c2787f99850fbb073)

Co-authored-by: Adorilson Bezerra <adorilson@gmail.com>

[3.11] gh-91227: Ignore ERROR_PORT_UNREACHABLE in proactor recvfrom() (GH-32011) (GH-117210)

(cherry picked from commit f11d0d8be8af28e1368c3c7c116218cf65ddf93e)

Co-authored-by: Erik Soma <stillusingirc@gmail.com>

[3.11] GH-115986 Docs: promote pprint.pp usage as a default (GH-116614) (#117197)

Co-authored-by: Kerim Kabirov <the.privat33r+gh@pm.me>
Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>

[3.11] gh-101760: Improve the imaplib.IMAP4 example (GH-101764) (#117192)

Co-authored-by: LilKS <1244886+LilKS@users.noreply.github.com>
Co-authored-by: Adam Turner <9087854+AA-Turner@users.noreply.github.com>

[3.11] [docs] Fix typo in docstring and add example to logging cookbook. (GH-117157) (GH-117158)

(cherry picked from commit 00baaa21de229a6db80ff2b84c2fd6ad1999a24c)

[3.11] docs: fix over-linking in dataclasses.rst (GH-117005) (#117164)

* docs: fix over-linking in dataclasses.rst (#117005)

(cherry picked from commit 0907871d43bffb613cbd560224e1a9db13d06c06)

* [3.11] docs: fix over-linking in dataclasses.rst (GH-117005)
(cherry picked from commit 0907871d43bffb613cbd560224e1a9db13d06c06)

Co-authored-by: Ned Batchelder <ned@nedbatchelder.com>
---------

Co-authored-by: Ned Batchelder <ned@nedbatchelder.com>

[3.11] gh-117084: Fix ZIP file extraction for directory entry names with backslashes on Windows (GH-117129) (GH-117162) (GH-117165)

(cherry picked from commit f3fee231d359979133e1d58085f43277c41476d0)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
(cherry picked from commit 567ab3bd15398c8c7b791f3e376ae3e3c0bbe079)

Fix get_packagefamilyname helper function on Windows 32-bit (GH-117153)

(cherry picked from commit 3be9b9d8722696b95555937bb211dc4cda714d56)

Co-authored-by: Steve Dower <steve.dower@python.org>

[3.11] gh-117127: glob tests: Reopen dir_fd to pick up directory changes (GH-117128) (GH-117149)

gh-117127: glob tests: Reopen dir_fd to pick up directory changes (GH-117128)
(cherry picked from commit 42ae924d278c48a719fb0ab86357f3235a9f7ab9)

Co-authored-by: Petr Viktorin <encukou@gmail.com>

[3.11] gh-75988: Fix issues with autospec ignoring wrapped object (GH-115223) (#117124)

gh-75988: Fix issues with autospec ignoring wrapped object (#115223)

* set default return value of functional types as _mock_return_value

* added test of wrapping child attributes

* added backward compatibility with explicit return

* added docs on the order of precedence

* added test to check default return_value

(cherry picked from commit 735fc2cbbcf875c359021b5b2af7f4c29f4cf66d)

[3.11] gh-117061: Fix test_posix.test_sched_setaffinity() on RHEL9 (GH-117126) (#117138)

gh-117061: Fix test_posix.test_sched_setaffinity() on RHEL9 (GH-117126)

On RHEL9, sched_setaffinity(0, []) does not fail.
(cherry picked from commit 50f9b0b1e0fb181875751cef951351ed007b6397)

Co-authored-by: Victor Stinner <vstinner@python.org>

[3.11] gh-117021: Fix integer overflow in PyLong_AsPid() on non-Windows 64-bit platforms (GH-117064) (GH-117070) (GH-117075)

(cherry picked from commit da2f9d1417a7d28df6e1ced87d64ecf28acb0a5f)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
(cherry picked from commit 519b2ae22b54760475bbf62b9558d453c703f9c6)

[3.11] Fix sort order for "locale encoding" glossary item (GH-115794) (#117103)

Co-authored-by: Carol Willing <carolcode@willingconsulting.com>
Co-authored-by: C.A.M. Gerlach <CAM.Gerlach@Gerlach.CAM>

[3.11] gh-116773: Fix overlapped memory corruption crash (GH-116774) (#117077)

Manual backport of gh-116774.

[3.11] gh-117058: Update GUI and packaging recommendations for macOS. (GH-117059) (#117082)

Co-authored-by: Russell Keith-Magee <russell@keith-magee.com>

[3.11] gh-90300: Improve the Python CLI help output (GH-115853) (GH-117022) (GH-117034)

* document equivalent command-line options for all environment variables
* document equivalent environment variables for all command-line options
* reduce the size of variable and option descriptions to minimum
* remove the ending period in single-sentence descriptions

(cherry picked from commit b85572c47dc7a8c65fc366a87a3660fc7a3ed244)

(cherry picked from commit 4be9fa896117bf07dc944a29c98dd18b71dd6c74)

Co-authored-by: Éric <merwok@netwok.org>
Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>

[3.11] docs: announce venv creation before installing packages (GH-117036) (#117039)

Co-authored-by: Ned Batchelder <ned@nedbatchelder.com>

[3.11] gh-101100: Fix Sphinx warnings in `library/pydoc.rst` (GH-116913) (#117038)

Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>

[3.11] Update titles and subtitles on landing page template (GH-116914) (#117019)

Update titles and subtitles on landing page template (GH-116914)

* Update titles and subtitles on landing page template

* address review from gvanrossum

* Edits from hugovk review

* Change word order back. Down the road we should split license and history
(cherry picked from commit c514a975abe35fa4604cd3541e2286168ef67d10)

Co-authored-by: Carol Willing <carolcode@willingconsulting.com>

[3.11] gh-116957: configparser: Do post-process values after DuplicateOptionError (GH-116958) (GH-117012)

If you catch DuplicateOptionError / DuplicateSectionError when reading a
config file (the intention is to skip invalid config files) and then
attempt to use the ConfigParser instance, any values it *had* read
successfully so far, were stored as a list instead of string! Later
`get` calls would raise "AttributeError: 'list' object has no attribute
'find'" from somewhere deep in the interpolation code.

(cherry picked from commit b1bc37597f0d36084c4dcb15977fe6d4b9322cd4)

[3.11] gh-107607: Update comment about utf-8 BOM being ignored (GH-107858) (#117015)

(cherry picked from commit 7f64ae30ddc22577ce4101ce0b6601b3548b036f)
Co-authored-by: Terry Jan Reedy tjreedy@udel.edu

[3.11] gh-90872: Fix subprocess.Popen.wait() for negative timeout (#116989) (#117003)

gh-90872: Fix subprocess.Popen.wait() for negative timeout (#116989)

On Windows, subprocess.Popen.wait() no longer calls
WaitForSingleObject() with a negative timeout: pass 0 ms if the
timeout is negative.

(cherry picked from commit 27cf3ed00cfe942f4277c273a3dda8ee2ba61fc8)

[3.11] gh-105866: fix dataclass with slots=True, weakref_slot=True (GH-105870) (GH-116979)

(cherry picked from commit a22d05f04c074dbb4f71e7837f54c0bb693db75d)

Co-authored-by: Aviel Boag <avboag@gmail.com>
Co-authored-by: Kirill Podoprigora <kirill.bast9@mail.ru>
Co-authored-by: Carl Meyer <carl@oddbird.net>

[3.11] Bump GitHub Actions (GH-116944) (GH-116949)

(cherry picked from commit 3a99f5c5f34dc7b67597ca7230da355d92927c71)

Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>

[3.11] gh-90535: Fix support of interval>1 in logging.TimedRotatingFileHandler (GH-116220) (GH-116893)

Fix support of interval values > 1 in logging.TimedRotatingFileHandler
for when='MIDNIGHT' and when='Wx'.
(cherry picked from commit 269051d20e65eda30734cbbbdb07d21df61978d6)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>

[3.11] gh-116881: Remove erroneous or redundant grammar NULL (GH-116885) (#116952)

In Lexical Analysis f-strings section, NULL in the description
of 'literal character' means '\0'.  In the format_spec grammar
production, it is wrong with that meaning and redundant if
instead interpreted as <nothing>.  Remove it there.
(cherry picked from commit 4e45c6c54a9457b1ca5b4cf3aa2843b7218d4414)

Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>

[3.11] gh-116831: Fixes tests for c extension in WASI for Python 3.11 (GH-116831) (#116933)

gh-116831: Fixes tests for c extension in WASI

We can skip the C extension based tests under WASI.

[3.11] gh-116851: Remove "from ctypes import *" from a ctypes example (GH-116852) (GH-116906)

It is confusing, because libc is not imported from ctypes,
but defined in previous examples, which already contain the import.
(cherry picked from commit 744c0777952f1e535d1192ee15b286aa67b61533)

Co-authored-by: jnchen <caojingchen@live.com>

[3.11] gh-116484: Fix collisions between Checkbutton and ttk.Checkbutton default names (GH-116495) (GH-116902)

Change automatically generated tkinter.Checkbutton widget names to
avoid collisions with automatically generated tkinter.ttk.Checkbutton
widget names within the same parent widget.
(cherry picked from commit c61cb507c10c5b597928284e087a9a384ab267d0)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>

[3.11] gh-116764: Fix regressions in urllib.parse.parse_qsl() (GH-116801) (GH-116895)

* Restore support of None and other false values.
* Raise TypeError for non-zero integers and non-empty sequences.

The regressions were introduced in gh-74668
(bdba8ef42b15e651dc23374a08143cc2b4c4657d).
(cherry picked from commit 1069a462f611f0b70b6eec0bba603d618a0378f3)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>

[3.11] gh-116858: Add `@cpython_only` to several tests in `test_cmd_line` (GH-116859) (#116890)

[3.11] gh-116811: Ensure MetadataPathFinder.invalidate_caches is reachable when delegated through PathFinder. (GH-116812) (#116865)

* Make MetadataPathFinder a proper classmethod.

* In PathFinder.invalidate_caches, also invoke MetadataPathFinder.invalidate_caches.

* Add blurb
(cherry picked from commit 5f52d20a93908196f74271db8437cc1ba7e1e262)

[3.11] gh-90095: Ignore empty lines and comments in `.pdbrc` (GH-116834) (#116855)

gh-90095: Ignore empty lines and comments in `.pdbrc` (GH-116834)
(cherry picked from commit a50cf6c3d76b34e2ee9f92a248f1b0df24e407f6)

Co-authored-by: Tian Gao <gaogaotiantian@hotmail.com>

[3.11] gh-90300: Fix undocumented envvars in the Python CLI help (GH-116765) (GH-116797) (GH-116803)

(cherry picked from commit fc4d5fdffe3d9829b118232f35ccee61a27392ee)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
(cherry picked from commit 19ac28bd08fdb16795e6f82ea7bfac73e8f3791b)

[3.11] gh-90300: Document equivalent -X options for envvars in the Python CLI help (GH-116756) (GH-116786) (GH-116796)

(cherry picked from commit 991710af022f27db862ff1399178bcc76b062669)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
(cherry picked from commit 8c6db45ce34df7081d7497e638daf3e130303295)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>

[3.11] gh-116785: Fix direct invocation of `test_inspect` (GH-116787) (#116795)

gh-116785: Fix direct invocation of `test_inspect` (GH-116787)
(cherry picked from commit 66fb613d90fe3dea32130a5937963a9362c8a59e)

Co-authored-by: Nikita Sobolev <mail@sobolevn.me>

[3.11] gh-90300: Sort the -X options and some envvars in the Python CLI help (GH-116739) (GH-116766) (GH-116779)

(cherry picked from commit 870cd901ea72e85eea825425336305296ee443cc)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
(cherry picked from commit e54bdeab9ce2958a22ba08c1f1f1431c5e8056bd)

[3.11] GH-115979: update test_importlib to work under WASI SDK 21 (GH-116754) (GH-116762)

(cherry picked from commit 61733a2fb9dc36d2246d922146a3462a2248832d)

[3.11] gh-98731: Improvements to the logging documentation (GH-101618) (GH-116733)

(cherry picked from commit 7f418fb111dec325b5c9fe6f6e96076049322f02)

[3.11] gh-106687: _ssl: use uint64_t for SSL options (#106700) (#116665)

gh-106687: _ssl: use uint64_t for SSL options (#106700)

SSL_CTX_get_options() uses uint64_t for options:
https://www.openssl.org/docs/man3.1/man3/SSL_CTX_get_options.html

Fix this compiler warning on Windows with MSC:

    conversion from 'uint64_t' to 'long', possible loss of data

(cherry picked from commit ad95c7253a70e559e7d3f25d53f4772f28bb8b44)

[3.11] gh-110918: Fix side effects of regrtest test_match_tests() (GH-116718) (#116727)

gh-110918: Fix side effects of regrtest test_match_tests() (GH-116718)

test_match_tests now saves and restores patterns.

Add get_match_tests() function to libregrtest.filter.

Previously, running test_regrtest multiple times in a row only ran
tests once: "./python -m test test_regrtest -R 3:3.
(cherry picked from commit 612f1ec988314bc0bc42a1b908751950331e2ede)

Co-authored-by: Victor Stinner <vstinner@python.org>

[3.11] [doc]: Update cookbook recipe for Qt6. (GH-116719) (GH-116728)

(cherry picked from commit 186af3cf21705badec086ec16f231ac390747d3b)

[3.11] gh-90300: Fix cmdline.rst (GH-116721) (GH-116725)

* Fix the description of the "-b" option.
* Add references to environment variables for "-s" and "-X dev" options.
(cherry picked from commit 33662d4e01d73cd4f29a25efc2ef09288129023f)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>

[3.11] gh-116714: Handle errors correctly in `PyFloat_GetInfo` (GH-116715) (#116723)

gh-116714: Handle errors correctly in `PyFloat_GetInfo` (GH-116715)
(cherry picked from commit fcd49b4f47f1edd9a2717f6619da7e7af8ea73cf)

Co-authored-by: Nikita Sobolev <mail@sobolevn.me>
Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>

[3.11] gh-111307: Update design FAQ 'switch' entry (GH-115899) (#116704)

(cherry picked from commit 43986f55671ba2f7b08f8c5cea69aa136a093697)
Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>

[3.11] gh-116401: Fix blocking os.fwalk() and shutil.rmtree() on opening a named pipe (GH-116421) (GH-116717)

(cherry picked from commit aa7bcf284f006434b07839d82f325618f7a5c06c)

[3.11] gh-116491: Improve `test_win32_ver` (GH-116506) (#116709)

gh-116491: Improve `test_win32_ver` (GH-116506)
(cherry picked from commit ee0dbbc04504e0e0f1455e2bab8801ce0a682afd)

Co-authored-by: Nikita Sobolev <mail@sobolevn.me>

[3.11] gh-115264: Fix `test_functools` with `-00` mode (GH-115276) (#116706)

gh-115264: Fix `test_functools` with `-00` mode (GH-115276)
(cherry picked from commit 27df81d5643f32be6ae84a00c5cf84b58e849b21)

Co-authored-by: Nikita Sobolev <mail@sobolevn.me>

[3.11] Docs: fix broken links (GH-116651) (#116701)

(cherry picked from commit 3f1b6efee95c06f8912bcea4031afacdbc0d5684)

[3.11] gh-116307: Proper fix for 'mod' leaking across importlib tests… (#116694)

[3.11] gh-116307: Proper fix for 'mod' leaking across importlib tests (GH-116680)
(cherry picked from commit a2548077614f81f25a2c3465dabb7a0a3885c40c)

gh-116307: Create a new import helper 'isolated modules' and use that instead of 'Clean Import' to ensure that tests from importlib_resources don't leave modules in sys.modules.

[3.11] gh-116682: stdout may be empty in test_cancel_futures_wait_false (GH-116683) (#116693)

If the `shutdown()` call happens before the worker thread starts executing
the task, then nothing will be printed to stdout.
(cherry picked from commit 7d1abe9502641a3602e9773aebc29ee56d8f40ae)

Co-authored-by: Sam Gross <colesbury@gmail.com>

[3.11] Add `typing.NamedTuple` in glossary section for named tuples (GH-108327) (#116690)

(cherry picked from commit 149f7f7ae28944579792d22607532006977177c9)

Co-authored-by: Tushar Sadhwani <tushar.sadhwani000@gmail.com>

[3.11] gh-110819: Fix ‘kind’ may be used uninitialized warning in `longobject` (GH-116599) (#116650)

(cherry picked from commit eb947cdc1374842a32fa82249ba3c688abf252dc)

[3.11] gh-90095: Make .pdbrc work properly and add some reasonable te… (#116660)

[3.11] gh-90095: Make .pdbrc work properly and add some reasonable tests (GH-110496)
(cherry picked from commit 44f9a84b67c97c94f0d581ffd63b24b73fb79610)

[3.11] gh-116541: Handle errors correctly in `_pystatvfs_fromstructstatvfs` (GH-116542) (#116644)

gh-116541: Handle errors correctly in `_pystatvfs_fromstructstatvfs` (GH-116542)
(cherry picked from commit f8147d01da44da2434496d868c86c2785f7244cd)

Co-authored-by: Nikita Sobolev <mail@sobolevn.me>

[3.11] gh-116600: [Enum] fix global Flag repr (GH-116615) (#116630)

* and fix global flag repr

(cherry picked from commit 06e29a224fac9edeba55422d2e60f2fbb88dddce)

Co-authored-by: Ethan Furman <ethan@stoneleaf.us>
Co-authored-by: Kirill Podoprigora <kirill.bast9@mail.ru>

[3.11] gh-116563: Update tutorial error example (GH-116569) (#116625)

There now may be multiple carets pointing at a token
rather than just a character.  Fix the sentence about
possible causes.
(cherry picked from commit 3e45030076bf2cfab41c4456c73fb212b7322c60)

Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>

[3.11] gh-71052: Use `raise_signal` in `ThreadSignals.test_signals` (GH-116423) (#116617)

gh-71052: Use `raise_signal` in `ThreadSignals.test_signals` (GH-116423)

Use `raise_signal` rather than `kill` in `ThreadSignals.test_signals`
(cherry picked from commit 34920f36917de0d4e658cf94992d53a5a7f27f51)

Co-authored-by: Malcolm Smith <smith@chaquo.com>

[3.11] gh-116545: Fix error handling in `mkpwent` in `pwdmodule` (GH-116548) (#116594)

gh-116545: Fix error handling in `mkpwent` in `pwdmodule` (GH-116548)
(cherry picked from commit ffd79bea0f032df5a2e7f75e8c823a09cdc7c7a2)

Co-authored-by: Nikita Sobolev <mail@sobolevn.me>

 [3.11] gh-115421: List all test/ subdirs in Makefile, and test them (GH-115813)

This backports:
- GH-115813
- GH-115422

Unlike on the main branch, new directories are added to the end,
so they're a bit easier to patch out if a redistributor needs to do so.

On main & 3.12, there's a special case for `idlelib/idle_test`; on
3.11 TESTSUBDIRS has several more entries that are not in `test/`.
This backport ignores all of them (including idlelib).
(The alternative would be list them, as additions to TEST_HOME_DIR.
But that's probably too invasive; people might split stdlib up in
surprising ways.)

Co-authored-by: Nikita Sobolev <mail@sobolevn.me>

[3.11] gh-88352: Make TimedRotatingFileHandler tests more stable (GH-116409) (GH-116586)

The tests failed (with less than 1% probability) if for example the file
was created at 11:46:03.999, but the record was emitted at 11:46:04.001,
with atTime=11:46:04, which caused an unexpected rollover. Ensure that the
tests are always run within the range of the same whole second.

Also share code between test_rollover_at_midnight and test_rollover_at_weekday.
(cherry picked from commit d8712fa0c75ad5ea56543903fa45674ab47cc647)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>

[3.11] gh-116576: Fix `Tools/scripts/sortperf.py` sorting the same list (GH-116577) (#116583)

gh-116576: Fix `Tools/scripts/sortperf.py` sorting the same list (GH-116577)
(cherry picked from commit 4704e55a71c859c5d17cc2747ba62f49da58ea2d)

Co-authored-by: Nikita Sobolev <mail@sobolevn.me>

[3.11] gh-116535: Fix distracting "TypeError" in example code (gh-116538) (gh-116552)

gh-116535: Fix distracting "TypeError" in example code (gh-116538)
(cherry picked from commit db8f423f58e336eb6180a70d9886b443d7203c2c)

Co-authored-by: Declan <5962877+dec1@users.noreply.github.com>

[3.11] gh-116520: Fix error handling in `os_get_terminal_size_impl` in `posixmodule` (GH-116521) (#116540)

gh-116520: Fix error handling in `os_get_terminal_size_impl` in `posixmodule` (GH-116521)
(cherry picked from commit b4b4e764a798bab60324871074ce4cdebb9d01bb)

Co-authored-by: Nikita Sobolev <mail@sobolevn.me>

[3.11] GH-116218 Docs: Add availability information for the 'resource' module (GH-116256) (#116534)

GH-116218 Docs: Add availability information for the 'resource' module (GH-116256)

Add availability data to 'resource' module Docs
(cherry picked from commit 03f86b1b626ac5b0df1cc74d8f80ea11117aec8c)

Co-authored-by: Kerim Kabirov <39376984+Privat33r-dev@users.noreply.github.com>

[3.11] gh-105535 Document potential performance trap during enum creation (GH-107119) (GH-116512)

(cherry picked from commit 601f3a7b3391e9d219a8ec44a6c56d00ce584d2a)

Co-authored-by: Nicolas A. Oyarzabal <79150521+nicky-eng@users.noreply.github.com>
Co-authored-by: Ethan Furman <ethan@stoneleaf.us>
Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>

[3.11] gh-116447: Fix possible UB in `arraymodule` and `getargs` (GH-116459) (#116497)

gh-116447: Fix possible UB in `arraymodule` and `getargs` (GH-116459)
(cherry picked from commit fdb2d90a274158aee23b526d972172bf41bd4b7e)

Co-authored-by: Nikita Sobolev <mail@sobolevn.me>

[3.11] gh-116485: Fixed the typo (GH-116486) (#116490)

Co-authored-by: Varun Gole <59524264+varungole@users.noreply.github.com>
Co-authored-by: Alex Waygood <Alex.Waygood@Gmail.com>

gh-116472: Replace literal newlines with escape characters in MSBuild files (GH-116473)

(cherry picked from commit 5d0cdfe519e6f35ccae1a1adca1ffd7fac10cee0)

Co-authored-by: Dan Albert <dan@gingerhq.net>

[3.11] gh-116448: Handle errors correctly in `os_waitid_impl` in `posixmodule` (GH-116449) (#116453)

gh-116448: Handle errors correctly in `os_waitid_impl` in `posixmodule` (GH-116449)
(cherry picked from commit 882fcede83af783a834b759e4643130dc1307ee3)

Co-authored-by: Nikita Sobolev <mail@sobolevn.me>

[3.11] gh-115664: Fix ordering of more versionadded and versionchanged directives (GH-116298) (GH-116450) (GH-116452)

(cherry picked from commit 1e75fe146857b5e6624bd3281675cf20cc356273)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
(cherry picked from commit 808a77612fb89b125d25efac2788522a100e8a6d)

[3.11] gh-88118: Fix some test_multiprocessing flakiness. (GH-116434) (GH-116441)

Fix some test_multiprocessing flakiness.

Potentially introduced by https://github.com/python/cpython/pull/25845

not joining that thread likely leads to recently observed "environment
changed" logically passing but overall failing tests seen on some
buildbots similar to:

```
1 test altered the execution environment (env changed):
    test.test_multiprocessing_fork.test_processes

2 re-run tests:
    test.test_multiprocessing_fork.test_processes
    test.test_multiprocessing_forkserver.test_processes
```
(cherry picked from commit ea1803e608a7aaf9cf2c07e510d8540d46d3b9ad)

Co-authored-by: Gregory P. Smith <greg@krypto.org>

[3.11] gh-115398: Expose Expat >=2.6.0 reparse deferral API (CVE-2023-52425) (GH-115623) (#116268)

Allow controlling Expat >=2.6.0 reparse deferral (CVE-2023-52425) by adding five new methods:

- `xml.etree.ElementTree.XMLParser.flush`
- `xml.etree.ElementTree.XMLPullParser.flush`
- `xml.parsers.expat.xmlparser.GetReparseDeferralEnabled`
- `xml.parsers.expat.xmlparser.SetReparseDeferralEnabled`
- `xml.sax.expatreader.ExpatParser.flush`

Based on the "flush" idea from #115138 (comment) .

- Please treat as a security fix related to CVE-2023-52425.

(cherry picked from commit 6a95676)
(cherry picked from commit 73807eb)
(cherry picked from commit eda2963)

---------

Includes code suggested-by: Snild Dolkow <snild@sony.com>
and by core dev Serhiy Storchaka.
Co-authored-by: Gregory P. Smith <greg@krypto.org>

[3.11] gh-90300: Reformat the Python CLI help output (GH-115847) (GH-116418)

(cherry picked from commit 2e92ffd7fa89e3bd33ee2f31541d3dc53aaa2d12)
(cherry picked from commit 2bdd1d6f15d5507a9ed6dff10e9fb57e2a8c0b40)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>

[3.11] gh-116143: Fix race condition in pydoc _start_server (GH-116144) (#116416)

gh-116143: Fix race condition in pydoc _start_server (GH-116144)
(cherry picked from commit 02ee475ee3ce9468d44758df2cd79df9f0926303)

Co-authored-by: Itamar Oren <itamarost@gmail.com>

[3.11] gh-116404: Handle errors correctly in `wait_helper` in `posixmodule` (GH-116405) (#116407)

gh-116404: Handle errors correctly in `wait_helper` in `posixmodule` (GH-116405)
(cherry picked from commit 22ccf13b332902142fe0c52c593f9efc152c7761)

Co-authored-by: Nikita Sobolev <mail@sobolevn.me>

[3.11] gh-116326: Handler errors correctly in `getwindowsversion` in `sysmodule` (GH-116339) (#116388)

(cherry picked from commit c91bdf86ef1cf9365b61a46aa2e51e5d1932b00a)

[3.11] GH-116313: get WASI builds to run under wasmtime 18 w/ WASI 0.2/preview2 primitives (GH-116327) (GH-116373) (GH-116384)

(cherry picked from commit 88fdb082d98104dd5612b06397f4c764a0936616)

[3.11] gh-115986: Fix inaccuracies in pprint docs (GH-116104) (#116383)

Amend wording after gh-116019 was merged.
(cherry picked from commit e205c5cd8f1a49d0ef126123312ee8a40d1416b6)

Co-authored-by: Kerim Kabirov <39376984+Privat33r-dev@users.noreply.github.com>

[3.11] chore: fix typos (GH-116345) (#116375)

Co-authored-by: cui fliter <imcusg@gmail.com>
(cherry picked from commit e7ba6e9dbe5433b4a0bcb0658da6a68197c28630)

[3.11] gh-74668: Fix support of bytes in urllib.parse.parse_qsl() (GH-115771) (GH-116367)

urllib.parse functions parse_qs() and parse_qsl() now support bytes
arguments containing raw and percent-encoded non-ASCII data.
(cherry picked from commit bdba8ef42b15e651dc23374a08143cc2b4c4657d)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>

[3.11] gh-76511: Fix email.Message.as_string() for non-ASCII message with ASCII charset (GH-116125) (GH-116365)

(cherry picked from commit f97f25ef5dfcdfec0d9a359fd970abd139cf3428)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>

[3.11] Fix the PyGetSetDef documentation (GH-116056) (GH-116368)

(cherry picked from commit df594011089a83d151ac7000954665536f3461b5)

[3.11] gh-115777: Fix double versionadded directives (GH-116269) (GH-116362)

(cherry picked from commit 0064dfa0919cc93257c351a609f99461f6e4e3ac)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>

[3.11] gh-116325: Raise `SyntaxError` rather than `IndexError` on ForwardRef with empty string arg (GH-116341) (#116348)

gh-116325: Raise `SyntaxError` rather than `IndexError` on ForwardRef with empty string arg (GH-116341)
(cherry picked from commit a29998a06bf75264c3faaeeec4584a5f75b45a1f)

Co-authored-by: Nikita Sobolev <mail@sobolevn.me>

[3.11] gh-116265: Remove obsolete sentence. (GH-116284) (#116332)

Remove sentence in Tools/c-analyzer/README referring to deleted
ignore-globals.txt.
(cherry picked from commit 88b5c665ee1624af1bc5097d3eb2af090b9cabed)

Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>

[3.11] gh-115320: Refactor `get_hash_info` in `sysmodule.c` not to swallow errors (GH-115321) (#116324)

gh-115320: Refactor `get_hash_info` in `sysmodule.c` not to swallow errors (GH-115321)
(cherry picked from commit 207030f5527d405940b79c10c1413c1e8ff696c1)

Co-authored-by: Nikita Sobolev <mail@sobolevn.me>

[3.11] Docs: update using/configure.rst (GH-116274) (#116277)

[3.11] GH-116271 Docs: provide clarification for object assignments in the Tutorial section (GH-116283) (#116306)

Co-authored-by: Kerim Kabirov <39376984+Privat33r-dev@users.noreply.github.com>
Co-authored-by: Ned Batchelder <ned@nedbatchelder.com>
Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>

gh-104711: Add security warning to the CGIHTTPRequestHandler document (GH-115915)

(cherry picked from commit dac8ff4c401f75e65a5eef1514f2d7987e63bbfe)

[3.11] gh-116296: Fix refleak in reduce_newobj() corner case (GH-116297) (#116300)

(cherry picked from commit 17c4849981905fb1c9bfbb2b963b6ee12e3efb2c)

Co-authored-by: Erlend E. Aasland <erlend@python.org>
Co-authored-by: Brandt Bucher <brandtbucher@microsoft.com>

[3.11] gh-116281: Remove wrong '\' from '\*' in some doc signatures (GH-116282) (#116289)

gh-116281: Remove wrong '\' from '\*' in some doc signatures (#116282)

(cherry picked from commit 4859ecb8609b51e2f6b8fb1b295e9ee0f83e1be6)

Co-authored-by: HarryLHW 123lhw321@gmail.com

[3.11] gh-112281: Allow `Union` with unhashable `Annotated` metadata (GH-112283) (#116288)

Co-authored-by: Alex Waygood <Alex.Waygood@Gmail.com>

[3.11] gh-116010: Remove link to deprecated PEP 6 in FAQ guide (GH-116246) (#116287)

Co-authored-by: Iman Tabrizian <iman.tabrizian@gmail.com>
Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>

[3.11] gh-115809: Improve TimedRotatingFileHandler.getFilesToDelete() (GH-115812) (GH-116262)

Improve algorithm for computing which rolled-over log files to delete
in logging.TimedRotatingFileHandler. It is now reliable for handlers
without namer and with arbitrary deterministic namer that leaves
the datetime part in the file name unmodified.
(cherry picked from commit 87faec28c78f6fa8eaaebbd1ababf687c7508e71)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>

[3.11] gh-72971: Clarify the special no-TypeError behavior for equality (GH-110729) (#116255)

(cherry picked from commit 67f742e03aacb6217c5bb496e31f96dbf31c6f86)

Co-authored-by: Gouvernathor <44340603+Gouvernathor@users.noreply.github.com>

[3.11] gh-114494: Change logging docstring to bool for exec_info (GH-114558) (GH-116242)

(cherry picked from commit 07236f5b39a2e534cf190cd4f7c73300d209520b)

Co-authored-by: Tristan Pank <tristanpank@gmail.com>

[3.11] GH-115978: Disable `*readv()` and `*writev()` on WASI (GH-116228) (GH-116232)

GH-115978: Disable `*readv()` and `*writev()` on WASI (GH-116228)

Wasmtime doesn't implement these functions in a way to pass test_posix (https://github.com/bytecodealliance/wasmtime/issues/7830).
(cherry picked from commit 5dc8c84d397110f9edfa56793ad8887b1f176d79)

Co-authored-by: Brett Cannon <brett@python.org>

[3.11] gh-116035: Document that both tzinfo and fold are ignored in comparisons if tzinfo is the same (GH-116187) (GH-116217)

This mostly restores information removed in c12240ed28aac6494750e00143bc550c4d6d8ad1 (GH-114749).
(cherry picked from commit 05b04903a14279421ecdc6522b8202822de6ebb5)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>

[3.11] gh-88352: Fix logging.TimedRotatingFileHandler (GH-116191) (GH-116209)

* Do not overwrite already rolled over files. It happened at midnight or
  during the DST change and caused the loss of data.
* computeRollover() now always return the timestamp larger than the
  specified time.
* Fix computation of the rollover time during the DST change.
(cherry picked from commit fee86fd9a422612b39e5aabf2571b8fe4abac770)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>