bpo-1635741: Port _bisect module to multi-phase init

Misc/NEWS.d/next/Core and Builtins/2020-09-26-14-43-30.bpo-1635741.aJS9B3.rst

@@ -0,0 +1 @@
+Port :mod:`_bisect` to the multi-phase initialization (:pep:`489`).

Modules/_bisectmodule.c

@@ -234,21 +234,21 @@ having to sort the list after each insertion. For long lists of items with\n\
 expensive comparison operations, this can be an improvement over the more\n\
 common approach.\n");
 
+static struct PyModuleDef_Slot _bisectmodule_slots[] = {
+    {0, NULL}
+};
 
 static struct PyModuleDef _bisectmodule = {
     PyModuleDef_HEAD_INIT,
-    "_bisect",
-    module_doc,
-    -1,
-    bisect_methods,
-    NULL,
-    NULL,
-    NULL,
-    NULL
+    .m_name = "_bisect",
+    .m_doc = module_doc,
+    .m_methods = bisect_methods,
+    .m_slots = _bisectmodule_slots,
+    .m_size = 0
 };
 
 PyMODINIT_FUNC
 PyInit__bisect(void)
 {
-    return PyModule_Create(&_bisectmodule);
+    return PyModuleDef_Init(&_bisectmodule);
 }