Comment 14 for bug 2055114

Maintainers: please find attached a new version of my suggested source patch.

Changes:
* Bundle asyncore.py, asynchat.py and updated asyncserver.py (manual cherry-pick of upstream commit 1024452)
* Add 'python3-setuptools' to Depends

I have deliberately *not* inserted anything into the changelog as I believe this should all be checked and signed off by somebody who knows what they are doing.

Regarding Debian, trixie still ships python3.11 as of today, so this issue does not apply to them yet.

Thanks.