Handle Unicode contents on localised Windows systems when activating a
venv. activate.bat currently breaks on German Windows systems, as chcp.com does
not return a plain number as on English systems, but (arbitrarily) appends a dot at the end
(for example "Aktive Codepage: 850." instead of "Active Codepage: 850"). The
dependency to chcp.com is removed and ctypes is used to get, set and restore the
console output code page. The code page for console input is not changed.

We can't use __VENV_PYTHON__ to find python.exe, since it's UTF-8. cmd.exe decodes
the script using the console output code page.

* add jsonlines option to json.tool

* code review

* fix:avoid read infile after it close

* improve doc in whatsnew 3.8

Without setting mtime, time.time() will be used as the timestamp which will
end up in the compressed data and each invocation of the compress() function
will vary over time.

A program that runs indefinitely can overfill memory.

Move Py_BUILD_CORE code from Include/fileutils.h to a new
Include/internal/pycore_fileutils.h file.

Allow sending more than 2 GB at once on a multiprocessing connection on non-Windows systems.

Add a new subsection to the doc.

_testcapimodule.c must not include pycore_pathconfig.h, since it's an
internal header files.

Changes:

* Add _PyCoreConfig_AsDict() function to coreconfig.c.
* Remove pycore_pathconfig.h include from _testcapimodule.h.
* pycore_pathconfig.h now requires Py_BUILD_CORE to be defined.
* _testcapimodule.c compilation now fails if it's built with
  Py_BUILD_CORE defined.

The test depended on '/usr/share/zoneinfo/posixrules' or equivalent
because it set TZ without explicit DST transition rules. At least
on OpenSUSE Tumbleweed that file is linked to '/etc/localtime',
making the test fail with certain local timezones,
such as 'Europe/Moscow' which doesn't have DST transitions since 2011.

(This should have been done with the first PR for this issue.)

The section is renamed from "IDLE -- console differences".  It mostly
covers the implications of using custom sys.stdxxx objects.

https://bugs.python.org/issue35119

§31.5.6.3. Importing a source file directly: `module_from_spec` is new in Python 3.5.

"p" was not initialized if the first PyMem_RawRealloc() call failed.

Two kind of mistakes:

1. Missed space. After concatenating there is no space between words.

2. Missed comma. Causes unintentional concatenating in a list of strings.

The new option in the CLI of the profile module allow to profile
executable modules. This change follows the same implementation as the
one already present in `cProfile`.

As the argument is now present on both modules, move the tests to the
common test case to be run with profile as well.

This PR adds a cross-reference to the ellipsis object and the representation of recursive item in containers as indicated in [issue 9842](https://bugs.python.org/issue9842) by @bitdancer.


https://bugs.python.org/issue9842

This pull request adds some information about the special multipart/signed handling to clear about disabling header folding.


https://bugs.python.org/issue31887

Reported by ASAN.

Thanks!