When os.spawnve() fails while handling arguments, free correctly
argvlist: pass lastarg+1 rather than lastarg to free_string_array()
to also free the first item.

PPC64 Fedora 3.x buildbot requires at least a delta of 14 ms: revert
the utime delta to 20 ms.

I tried 10 ms, but test_os failed on the PPC64 Fedora 3.x buildbot.

When IDLE fail to start because the socket connection fails, direct people to a new subsection of the IDLE doc listing various causes and remedies.

_test_multiprocessing.test_queue_feeder_donot_stop_onexc() now uses a
timeout of 1 second on Queue.get(), instead of 0.1 second, for slow
buildbots.

On Windows, tolerate a delta of 50 ms instead of 20 ms in
test_utime_current() and test_utime_current_old() of test_os.

On other platforms, reduce the delta from 20 ms to 10 ms.

For unknown reasons, this does not work when running leak tests.

`PyModule_New()` now refers to `PyModule_NewObject()`

bpo-24744: Raise error in pkgutil.walk_packages if path is str

Previously an empty result list was accidentallly returned, since the
code iterated over the string as if it were the expected list of paths,
and of course found nothing.

* bpo-24484: Avoid race condition in multiprocessing cleanup

The finalizer registry can be mutated while inspected by multiprocessing
at process exit.

* Use test.support.start_threads()

* Add Misc/NEWS

Patch by Louie Lu.

When checking for reference leaks, test_c_locale_coercion is run
multiple times and so _LocaleCoercionTargetsTestCase.setUpClass() is
called multiple times. setUpClass() appends new value at each call,
so it looks like a reference leak.

Moving the setup from setUpClass() to setUpModule() avoids
this, eliminating the false alarm.

Don't run Python in an empty environment, but copy the current
environment and set PYTHONIOENCODING. So the test works also on
Python compiled in shared mode (using libpython).

* Fix race condition in signal wakeup in forkserver (followup to PR #1989)

There's an admittedly well-known race condition where ECHILD can arrive
just before the C function epoll_wait() and the latter wouldn't therefore
return EINTR.  The solution is to use set_wakeup_fd(), which was designed
to avoid such race conditions.

* Reset wakeup fd in child

Move up the discussion about 'with' keyword, so it appears earlier in the document.

* Fix bpo-30589: improve Process.exitcode with forkserver

When the child is killed, Process.exitcode should return -signum, not 255.

* Add Misc/NEWS

bpo-30624 / selectors: use bare 'except' clause instead of 'except
Exception'

If max_line_length=None is specified while using the Compat32 policy,
it is no longer ignored.

The traceback no longer displayed for SystemExit raised in a callback registered by atexit.

 import json before using json module 

Revert "bpo-29406: asyncio SSL contexts leak sockets after calling close with certain servers (#409)" (#2111)

This reverts commit a608d2d5.

The depth argument limits recursion.

SSLObject has recv() and send(), but they don't do any network io.

Also fixed a few more line endings that were missed in GH-840, which were causing failure.

- new PYTHONCOERCECLOCALE config setting
- coerces legacy C locale to C.UTF-8, C.utf8 or UTF-8 by default
- always uses C.UTF-8 on Android
- uses `surrogateescape` on stdin and stdout in the coercion
  target locales
- configure option to disable locale coercion at build time
- configure option to disable C locale warning at build time

#30624 / selectors: use bare except clause in order to not leave the fd in a bad state in case of error (#2082)