[issue43568] Drop support for Mac OS X < 10.3 module linking

[Ned Deily]

Change by Ned Deily <nad at python.org>:


----------
pull_requests: +24515
pull_request: https://github.com/python/cpython/pull/25827

_______________________________________
Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue43568>
_______________________________________