Rename _PyObject_FastCall() to _PyObject_FastCallDict()

Issue #27809:

* Rename _PyObject_FastCall() function to _PyObject_FastCallDict()
* Add _PyObject_FastCall(), _PyObject_CallNoArg() and _PyObject_CallArg1()
  macros calling _PyObject_FastCallDict()
diff --git a/Modules/_functoolsmodule.c b/Modules/_functoolsmodule.c
index f7dbf15..22e8088 100644
--- a/Modules/_functoolsmodule.c
+++ b/Modules/_functoolsmodule.c
@@ -492,7 +492,7 @@
      */
     stack[0] = x;
     stack[1] = y;
-    res = _PyObject_FastCall(compare, stack, 2, NULL);
+    res = _PyObject_FastCall(compare, stack, 2);
     if (res == NULL) {
         return NULL;
     }