bpo-36710: Add runtime parameter in gcmodule.c (GH-12958)

Add 'state' or 'runtime' parameter to functions in gcmodule.c to
avoid to rely directly on the global variable _PyRuntime.

Include/internal/pycore_pylifecycle.h

@@ -83,7 +83,7 @@ extern void _PyGILState_Init(
     PyThreadState *tstate);
 extern void _PyGILState_Fini(_PyRuntimeState *runtime);
 
-PyAPI_FUNC(void) _PyGC_DumpShutdownStats(void);
+PyAPI_FUNC(void) _PyGC_DumpShutdownStats(_PyRuntimeState *runtime);
 
 PyAPI_FUNC(_PyInitError) _Py_PreInitializeFromCoreConfig(
     const _PyCoreConfig *coreconfig);

Python/import.c

@@ -535,7 +535,7 @@ PyImport_Cleanup(void)
     _PyGC_CollectNoFail();
     /* Dump GC stats before it's too late, since it uses the warnings
        machinery. */
-    _PyGC_DumpShutdownStats();
+    _PyGC_DumpShutdownStats(&_PyRuntime);
 
     /* Now, if there are any modules left alive, clear their globals to
        minimize potential leaks.  All C extension modules actually end