multiprocessing.Pool destructor now emits ResourceWarning
if the pool is still running.

Format menu and preferences.

"dll" would leak if an error occurred in _validate_paramflags() or
GenericPyCData_new().

Fixed some errors in refcounts.dat, remove functions removed in
Python 3, and add more entries for documented functions. This will
add several automatically generated notes about return values.

Also add some internal cross-references.

Makes the documentation more comprehensive in terms of indicating
whether or not a function returns a new reference.

Also fixes some errors and adds missing functions. 

When compiling 3rd party C extensions, the linker flags used by the
compiler for the interpreter and the stdlib modules, will get
leaked into distutils. In order to avoid that, the PY_CORE_LDFLAGS
and PY_LDFLAGS_NODIST are introduced to keep those flags separated.

* extending the joke!

* 📜🤖 Added by blurb_it.

Fix test_multiprocessing_main_handling: use multiprocessing.Pool with
a context manager and then explicitly join the pool.

Fix a race condition in check_interrupted_write() of test_io:
create directly the thread with SIGALRM signal blocked,
rather than blocking the signal later from the thread. Previously, it
was possible that the thread gets the signal before the signal is
blocked.

Add a comment explaining why system_alias() doesn't alias Darwin to
macOS.

check_environ() of distutils.utils now catchs KeyError on calling
pwd.getpwuid(): don't create the HOME environment variable in this
case.

Remove ctypes callback workaround: no longer create a callback at startup.
Avoid SELinux alert on "import ctypes" and "import uuid".

uuid.uuid1() now calls time.time_ns() rather than
int(time.time() * 1e9). Replace also int(nanoseconds/100)
with nanoseconds // 100. Add an unit test.

Rename test.bisect module to test.bisect_cmd to avoid conflict with
bisect module when running directly a test like
"./python Lib/test/test_xmlrpc.py".

Make platform.architecture() parsing of "file" command output more
reliable:

* Add the "-b" option to the "file" command to omit the filename;
* Force the usage of the C locale;
* Search also the "shared object" pattern.
Co-Authored-By: Serhiy Storchaka <storchaka@gmail.com>

https://bugs.python.org/issue35415