Fix a shell code injection vulnerability in the
get-remote-certificate.py example script. The script no longer uses a
shell to run "openssl" commands. Issue reported and initial fix by
Caleb Shortt.

Remove the Windows code path to send "quit" on stdin to the "openssl
s_client" command: use DEVNULL on all platforms instead.

Co-authored-by: Caleb Shortt <caleb@rgauge.com>
(cherry picked from commit 83a0f44ffd8b398673ae56c310cf5768d359c341)

Fix multiplying a list by an integer (list *= int): detect the
integer overflow when the new allocated length is close to the
maximum size.  Issue reported by Jordan Limor.

list_resize() now checks for integer overflow before multiplying the
new allocated length by the list item size (sizeof(PyObject*)).
(cherry picked from commit a5f092f3c469b674b8d9ccbd4e4377230c9ac7cf)

Co-authored-by: Victor Stinner <vstinner@python.org>

Fix command line parsing: reject "-X int_max_str_digits" option with
no value (invalid) when the PYTHONINTMAXSTRDIGITS environment
variable is set to a valid limit.

(cherry picked from commit 41351662bcd21672d8ccfa62fe44d72027e6bcf8)

Co-authored-by: Gregory P. Smith [Google] <greg@krypto.org>
(cherry picked from commit 10e3d398c31cc1695752fc52bc6ca2ce9ef6237e)

Co-authored-by: Dong-hee Na <donghee.na@python.org>

[3.9] gh-95778: Mention sys.set_int_max_str_digits() in error message (GH-96874) (GH-96877)

When ValueError is raised if an integer is larger than the limit,
mention sys.set_int_max_str_digits() in the error message.

(cherry picked from commit e841ffc915e82e5ea6e3b473205417d63494808d)

Co-authored-by: Ned Deily <nad@python.org>
(cherry picked from commit 41188134bd2120f0cedd681ed88743c11c7f3742)

Co-authored-by: Victor Stinner <vstinner@python.org>

(cherry picked from commit 4114bcc9ef7595a07196bcecf9c7d6d39f57f64d)

Co-authored-by: Steve Dower <steve.dower@python.org>

Co-authored-by: Inada Naoki <songofacandy@gmail.com>
Co-authored-by: Ezio Melotti <ezio.melotti@gmail.com>