bpo-36974: rename _FastCallKeywords -> _Vectorcall (GH-13653)

diff --git a/Objects/call.c b/Objects/call.c
index 55dfc52..acd1f26 100644
--- a/Objects/call.c
+++ b/Objects/call.c
@@ -374,8 +374,8 @@
 
 
 PyObject *
-_PyFunction_FastCallKeywords(PyObject *func, PyObject* const* stack,
-                             size_t nargsf, PyObject *kwnames)
+_PyFunction_Vectorcall(PyObject *func, PyObject* const* stack,
+                       size_t nargsf, PyObject *kwnames)
 {
     PyCodeObject *co = (PyCodeObject *)PyFunction_GET_CODE(func);
     PyObject *globals = PyFunction_GET_GLOBALS(func);
@@ -714,9 +714,9 @@
 
 
 PyObject *
-_PyCFunction_FastCallKeywords(PyObject *func,
-                              PyObject *const *args, size_t nargsf,
-                              PyObject *kwnames)
+_PyCFunction_Vectorcall(PyObject *func,
+                        PyObject *const *args, size_t nargsf,
+                        PyObject *kwnames)
 {
     PyObject *result;
 
diff --git a/Objects/descrobject.c b/Objects/descrobject.c
index 7590185..3aaeaa6 100644
--- a/Objects/descrobject.c
+++ b/Objects/descrobject.c
@@ -264,9 +264,9 @@
 
 // same to methoddescr_call(), but use FASTCALL convention.
 PyObject *
-_PyMethodDescr_FastCallKeywords(PyObject *descrobj,
-                                PyObject *const *args, size_t nargsf,
-                                PyObject *kwnames)
+_PyMethodDescr_Vectorcall(PyObject *descrobj,
+                          PyObject *const *args, size_t nargsf,
+                          PyObject *kwnames)
 {
     assert(Py_TYPE(descrobj) == &PyMethodDescr_Type);
     PyMethodDescrObject *descr = (PyMethodDescrObject *)descrobj;
@@ -756,7 +756,7 @@
                                              type, method->ml_name);
     if (descr != NULL) {
         descr->d_method = method;
-        descr->vectorcall = &_PyMethodDescr_FastCallKeywords;
+        descr->vectorcall = _PyMethodDescr_Vectorcall;
     }
     return (PyObject *)descr;
 }
diff --git a/Objects/funcobject.c b/Objects/funcobject.c
index 2b1f42d..6f5b5d2 100644
--- a/Objects/funcobject.c
+++ b/Objects/funcobject.c
@@ -36,7 +36,7 @@
     op->func_defaults = NULL; /* No default arguments */
     op->func_kwdefaults = NULL; /* No keyword only defaults */
     op->func_closure = NULL;
-    op->vectorcall = _PyFunction_FastCallKeywords;
+    op->vectorcall = _PyFunction_Vectorcall;
 
     consts = ((PyCodeObject *)code)->co_consts;
     if (PyTuple_Size(consts) >= 1) {
diff --git a/Objects/methodobject.c b/Objects/methodobject.c
index 76497c9..544baee 100644
--- a/Objects/methodobject.c
+++ b/Objects/methodobject.c
@@ -52,7 +52,7 @@
         op->vectorcall = NULL;
     }
     else {
-        op->vectorcall = &_PyCFunction_FastCallKeywords;
+        op->vectorcall = _PyCFunction_Vectorcall;
     }
     _PyObject_GC_TRACK(op);
     return (PyObject *)op;