* Revert "bpo-30854: Fix compile error when --without-threads (#2581)"

This reverts commit 0c311630.

* Revert "NEWS for 30777 (#2576)"

This reverts commit aaa917ff.

* Revert "bpo-21624: IDLE -- minor htest fixes (#2575)"

This reverts commit 2000150c.

* Revert "bpo-30777: IDLE: configdialog - add docstrings and improve comments (#2440)"

This reverts commit 7eb5883a.

* Revert "bpo-30319: socket.close() now ignores ECONNRESET (#2565)"

This reverts commit 67e1478d.

* Revert "bpo-30789: Use a single memory block for co_extra. (#2555)"

This reverts commit 378ebb65.

* Revert "bpo-30845: Enhance test_concurrent_futures cleanup (#2564)"

This reverts commit 3df9dec4.

* Revert "bpo-29293: multiprocessing.Condition.notify() lacks parameter `n` (#2480)"

This reverts commit 48350412.

* Revert "Remove outdated FOX from GUI FAQ (GH-2538)"

This reverts commit d3ed2877.

* Revert "bpo-6691: Pyclbr now reports nested classes and functions. (#2503)"

This reverts commit 246ff3bd.

* Revert "bpo-29464: Rename METH_FASTCALL to METH_FASTCALL|METH_KEYWORDS and make (#1955)"

This reverts commit 6969eaf4.

* Revert "bpo-30832: Remove own implementation for thread-local storage (#2537)"

This reverts commit aa0aa049.

* Revert "bpo-30764: Fix regrtest --fail-env-changed --forever (#2536)"

This reverts commit 5e87592f.

* Revert "bpo-30822: Deduplicate ZoneInfoTest classes in test_datetime. (#2534)"

This reverts commit 34b54873.

* Revert "bpo-30822: Fix testing of datetime module. (#2530)"

This reverts commit 98b6bc3b.

* bpo-30854: Fix compile error when --without-threads

* bpo-30854: fix news

Patch by Cheryl Sabella. 

socket.close() was modified in Python 3.6 to raise OSError on
failure: see bpo-26685.

* bpo-30789: Use a single memory block for co_extra.

* Address review comments.

* bpo-30845: reap_children() now logs warnings

* bpo-30845: Enhance test_concurrent_futures cleanup

In setUp() and tearDown() methods of test_concurrent_futures tests,
make sure that tests don't leak threads nor processes. Clear
explicitly the reference to the executor to make it that it's
destroyed (to prevent "dangling threads" warning).

* bpo-29293: multiprocessing.Condition.notify() lacks parameter `n`

* Add NEWS blurb

FXpy doesn't have a Python 3 port and it only
supports Python 2.2 and older versions.

Reported by Alex Walters on docs@p.o.

 Original patch by Guilherme Polo.  Revisions by Cheryl Sabella.

the bare METH_FASTCALL be used for functions with positional-only
parameters.

* bpo-30832: Remove own implementation for thread-local storage

CPython has provided the own implementation for thread-local storage
(TLS) on Python/thread.c, it's used in the case which a platform has
not supplied native TLS.  However, currently all supported platforms
(NT and pthreads) have provided native TLS and defined the
Py_HAVE_NATIVE_TLS macro with unconditional in any case.

* bpo-30832: replace NT with Windows

* bpo-30832: change to directive chain

* bpo-30832: remove comemnt which making no sense

--forever now stops if a fail changes the environment.

Only C implementation was tested.

Always clear asyncore socket map using
asyncore.close_all(ignore_all=True) in tearDown() method.

This change should fix this warning:

Warning -- asyncore.socket_map was modified by test_ftplib
  Before: {}
  After:  {4: <test.test_ftplib.DummyTLS_FTPServer 127.0.0.1:0 at 0x805feccf0>}

Set the server attribute to None in cleanup to avoid dangling
threads.

Make tests fail if a test altered the environment.

bpo-26568, bpo-30812: Fix test_showwarnmsg_missing(): restore the
attribute after removing it.

bpo-11798, bpo-16662, bpo-16935, bpo-30813: Skip
test_discover_with_module_that_raises_SkipTest_on_import() and
test_discover_with_init_module_that_raises_SkipTest_on_import() of
test_unittest when hunting reference leaks using regrtest.

* bpo-30280: asyncio now cleans up threads

asyncio base TestCase now uses threading_setup() and
threading_cleanup() of test.support to cleanup threads.

* asyncio: Fix TestBaseSelectorEventLoop cleanup

bpo-30280: TestBaseSelectorEventLoop of
test.test_asyncio.test_selector_events now correctly closes the event
loop: cleanup its executor to not leak threads.

Don't override the close() method of the event loop, only override
the_close_self_pipe() method.

If threading_cleanup() fails to cleanup threads, set a a new
support.environment_altered flag to true, flag uses by save_env which
is used by regrtest to check if a test altered the environment. At
the end, the test file fails with ENV_CHANGED instead of SUCCESS, to
report that it altered the environment.

* bpo-30807: signal.setitimer() may disable the timer by mistake

* Add NEWS blurb

Split TextViewer class into ViewWindow, ViewFrame, and TextFrame classes so that instances
of the latter two can be placed with other widgets within a multiframe window.
Patch by Cheryl Sabella.

- On some versions of FreeBSD, setting the "UTF-8" locale
  succeeds, but a subsequent "nl_langinfo(CODESET)" fails
- adding a check for this in the coercion logic means that
  coercion will happen on systems where this check succeeds,
  and will be skipped otherwise
- that way CPython should automatically adapt to changes in
  platform behaviour, rather than needing a new release to
  enable coercion at build time
- this also allows UTF-8 to be re-enabled as a coercion
  target, restoring the locale coercion behaviour on Mac OS X

* bpo-30796: Fix failures in signal delivery stress test

setitimer() can have a poor minimum resolution on some machines,
this would make the test reach its deadline (and a stray signal
could then kill a subsequent test).

* Make sure to clear the itimer after the test

Only report a leak if each run leaks at least one memory block.

`PYTHONFRAMEWORK` is defined in `Makefile` and it shoulnd't be used
in `pyconfig.h`.

`sysconfig.py --generate-posix-vars` reads config vars from Makefile
and `pyconfig.h`.  Conflicting variables should be avoided.

Especially, string config variables in Makefile are unquoted, but
in `pyconfig.h` are keep quoted.  So it should be private (starts with
underscore).

* Improve signal delivery

Avoid using Py_AddPendingCall from signal handler, to avoid calling signal-unsafe functions.

* Remove unused function

* Improve comments

* Add stress test

* Adapt for --without-threads

* Add second stress test

* Add NEWS blurb

* Address comments @haypo

* bpo-23451: Fix WSASocket and WSADuplicateSocket deprecation warnings

* bpo-23451: Add backwards compatibility note about socket share/fromshare

* bpo-23451: Fixed `WSAAddressToString`/`WSAStringToAddress` deprecation warnings

* bpo-23451: Use `inet_pton`/`inet_ntop` instead of `WSAAddressToString`/`WSAStringToAddress`

* bpo-23451: Move `HAVE_INET_PTON` from _socket.vcxproj to pyconfig.h

* bpo-23451: Add SUPPRESS_DEPRECATED_CALL to socketmodule.c

* bpo-23451: Add a NEWS.d entry

* bpo-23451: Corrected NEWS.d entry

* bpo-30362 Add list options to launcher.

* bpo-30362 Add list options to help message.

* To avoid possible later conflict with python replaced flags with --launcher-list and --launcher-list-paths

* bpo-30362 Changed flag to -0 as suggested on review.

* bpo-30362: Modified to default to not path for -0, -0p to dispaly path and append * to default

* bpo-30362: Modified to display list on required version not found.

* bpo-30362 add --list and --list-paths added back in following review by paul.moore

* bpo-30362 Cleaner handing of -0 & -0p by not calling exit directly per review by @zooba

* bpo-30362: Tidy up and add news & what's new

Removed commented out line of code in PC/launcher.c.
Added the results of using blurb to add details of bpo-30362 & bpo-30291.
Updated Doc/whatsnew/3.7.rst to add a Windows only section covering both tickets.

* bpo-30362 Resolve conflict in Doc/whatsnew/3.7.rst

* bpo-30362:Address Whitespace Issue in Doc\whatsnew\3.7.rst

* Shorten NEWS message for bpo-30362

* Shorten NEWS item for bpo-30291

* bpo-29585: Fix PC/pyconfig.h whitespaces

Run "make patchcheck".

* bpo-29585: Define PYTHONFRAMEWORK in PC/pyconfig.h

* site: Fix path separator in _get_path() on Windows

Avoid importing `sysconfig` from `site` by copying minimum code.
Python startup is 5% faster on Linux and 30% faster on macOS

* Clear potential ref cycle between Process and Process target

Besides Process.join() not being called, this was an indirect cause of bpo-30775.
The threading module already does this.

* Add issue reference