Fixup of GH-93463:
- remove stray print
- use proper way to check file mode
- add working chmod decorator

Co-authored-by: Łukasz Langa <lukasz@langa.pl>

* gh-93575: Use correct way to calculate PyUnicode struct sizes

* Add comment to keep test_sys and test_unicode in sync

* Fix case code < 256

…ited API (GH-93581)

* Remove outdated notes from functions that aren't in the Limited API

Nowadays everything that *is* in the Limited API has a note added
automatically.
These notes could mislead people to think that these functions
could never be added to the limited API. Remove them.

* Also remove forgotten note on tp_vectorcall_offset not being finalized

All install targets use the "all" target as synchronization point to
prevent race conditions with PGO builds. PGO builds use recursive make,
which can lead to two parallel `./python setup.py build` processes that
step on each others toes.

"test" targets now correctly compile PGO build in a clean repo.

…n bases (GH-93535)

Co-authored-by: Alex Waygood <Alex.Waygood@Gmail.com>
Co-authored-by: Adam Turner <9087854+AA-Turner@users.noreply.github.com>
Co-authored-by: Erlend E. Aasland <erlend.aasland@protonmail.com>

)

)

These are currently broken as they refer to :meth:`Path.relative_to` rather than :meth:`PurePath.relative_to`, and `relative_to` is a method on `PurePath`.

…ces to tasks are needed (GH-93258)

Co-authored-by: Łukasz Langa <lukasz@langa.pl>

Co-authored-by: Sean Fleming
Co-authored-by: Adam Turner <9087854+AA-Turner@users.noreply.github.com>
Co-authored-by: Łukasz Langa <lukasz@langa.pl>

GH-93269)

Also, provide getHandlerByName() and getHandlerNames() APIs.

Closes #93162.

GH-93463)

Note: This change is not effective on Microsoft Windows.

Cookies can store sensitive information and should therefore be protected
against unauthorized third parties. This is also described in issue #79096.

The filesystem permissions are currently set to 644, everyone can read the
file. This commit changes the permissions to 600, only the creater of the file
can read and modify it. This improves security, because it reduces the attack
surface. Now the attacker needs control of the user that created the cookie or
a ways to circumvent the filesystems permissions.

This change is backwards incompatible. Systems that rely on world-readable
cookies will breake. However, one could argue that those are misconfigured in
the first place.

… for case-folding (GH-32010)

- Order exceptions as in PEP 249
- Reword descriptions, so they match the current behaviour

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

WASI does not have the ``chmod(2)`` syscall yet.

taks -> tasks

#92562)