bpo-35259: Limit Py_FinalizeEx() to Py_LIMITED_API >= 0x03060000. (GH-10620)

(cherry picked from commit 3e8f962) Co-authored-by: Arthur Neufeld <aneufeld@seinesoftware.ca>

Author: miss-islington

Include/pylifecycle.h

@@ -99,7 +99,9 @@ PyAPI_FUNC(void) Py_InitializeEx(int);
 PyAPI_FUNC(void) _Py_FatalInitError(_PyInitError err) _Py_NO_RETURN;
 #endif
 PyAPI_FUNC(void) Py_Finalize(void);
+#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 >= 0x03060000
 PyAPI_FUNC(int) Py_FinalizeEx(void);
+#endif
 PyAPI_FUNC(int) Py_IsInitialized(void);
 
 /* Subinterpreter support */

Misc/NEWS.d/next/C API/2018-11-22-13-52-36.bpo-35259.p07c61.rst

@@ -0,0 +1,2 @@
+Conditionally declare :c:func:`Py_FinalizeEx()` (new in 3.6) based on
+Py_LIMITED_API. Patch by Arthur Neufeld.