* Revert "bpo-32197: Try to fix a compiler error on OS X introduced in bpo-32030. (#4681)"

This reverts commit 13badcbc.

Re-apply commits:

* "bpo-32030: _PyPathConfig_Init() sets home and program_name (#4673)"
  commit af5a8950.
* "bpo-32030: Fix config_get_program_name() on macOS (#4669)"
  commit e23c06e2.
* "bpo-32030: Add Python/pathconfig.c (#4668)"
  commit 0ea395ae.
* "bpo-32030: Don't call _PyPathConfig_Fini() in Py_FinalizeEx() (#4667)"
  commit ebac19da.
* "bpo-32030: Fix Py_GetPath(): init program_name (#4665)"
  commit 9ac3d888.

* Fix compilation error on macOS