[issue40874] Update to libmpdec-2.5.0

[Stefan Krah]

Stefan Krah <stefan at bytereef.org> added the comment:

Ubuntu is my main system, and it does not break the build.

If you use --with-system-libmpdec, you need to keep in sync with
the external libmpdec.

----------

_______________________________________
Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue40874>
_______________________________________