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.

Author: vstinner

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);