Issue 35259: Py_FinalizeEx unconditionally exists in Py_LIMITED_API

In application compiled with
  #define Py_LIMITED_API 0x03040000
this method was used
  Py_FinalizeEx()

Tested application with:
  SET PATH=...;C:\Program Files\Python35
  APPLICATION.EXE


Result:
  Entry Point Not Found

  (X)  The procedure entry point Py_FinalizeEx could not be located
       in the dynamic link library
       C:\PATH\TO\APPLICATION.EXE


Expected Result:
  Application runs


Rebuilding, after replacing Py_FinalizeEx(void) with Py_Finalize(void):
  Application runs when pointing to 3.5 DLLs.


Suggested resolution:
  Declaration should be restricted to ABI 3.6+:

#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 >= 0x03060000
PyAPI_FUNC(int) Py_FinalizeEx(void);
#endif

I added the Py_FinalizeEx API in Issue 5319, but was relying on input from others about dealing with Py_LIMITED_API. After reading the documentation <https://docs.python.org/3.6/c-api/stable.html>, I now see that the function would be considered part of the limited API because its documentation doesn’t say otherwise. So Arthur’s resolution is correct.

New changeset 3e8f962e63c2f929604443531a9a3aced242f3e8 by Serhiy Storchaka (Arthur Neufeld) in branch 'master':
bpo-35259: Limit `Py_FinalizeEx()` to `Py_LIMITED_API >= 0x03060000`. (GH-10620)
https://github.com/python/cpython/commit/3e8f962e63c2f929604443531a9a3aced242f3e8

New changeset d1e717588728a23d576c4ead775f7dbd68149696 by Miss Islington (bot) in branch '3.7':
bpo-35259: Limit `Py_FinalizeEx()` to `Py_LIMITED_API >= 0x03060000`. (GH-10620)
https://github.com/python/cpython/commit/d1e717588728a23d576c4ead775f7dbd68149696

New changeset 5241ecff161ccf34083b6a824d1ae6d79917d889 by Ned Deily (Miss Islington (bot)) in branch '3.6':
bpo-35259: Limit `Py_FinalizeEx()` to `Py_LIMITED_API >= 0x03060000`. (GH-10620) (GH-11269)
https://github.com/python/cpython/commit/5241ecff161ccf34083b6a824d1ae6d79917d889

New changeset ffc106c596d87e6e41bf9a3b69a5943317914afd by Ned Deily (Miss Islington (bot)) in branch '3.7':
bpo-35259: Limit `Py_FinalizeEx()` to `Py_LIMITED_API >= 0x03060000`. (GH-10620)
https://github.com/python/cpython/commit/ffc106c596d87e6e41bf9a3b69a5943317914afd