Add API for static strings, primarily good for identifiers.
Thanks to Konrad Schöbel and Jasper Schulz for helping with the mass-editing.
diff --git a/Modules/_sqlite/module.c b/Modules/_sqlite/module.c
index cbc3b8e..20e1ec7 100644
--- a/Modules/_sqlite/module.c
+++ b/Modules/_sqlite/module.c
@@ -179,13 +179,14 @@
     PyObject* name = NULL;
     PyObject* callable;
     PyObject* retval = NULL;
+    _Py_identifier(upper);
 
     if (!PyArg_ParseTuple(args, "UO", &orig_name, &callable)) {
         return NULL;
     }
 
     /* convert the name to upper case */
-    name = PyObject_CallMethod(orig_name, "upper", "");
+    name = _PyObject_CallMethodId(orig_name, &PyId_upper, "");
     if (!name) {
         goto error;
     }