bpo-36974: tp_print -> tp_vectorcall_offset and tp_reserved -> tp_as_async (GH-13464)

Automatically replace
tp_print -> tp_vectorcall_offset
tp_compare -> tp_as_async
tp_reserved -> tp_as_async
diff --git a/Objects/unicodeobject.c b/Objects/unicodeobject.c
index eafda63..6ec4127 100644
--- a/Objects/unicodeobject.c
+++ b/Objects/unicodeobject.c
@@ -8106,10 +8106,10 @@
     0,                      /*tp_itemsize*/
     /* methods */
     0,                      /*tp_dealloc*/
-    0,                      /*tp_print*/
+    0,                      /*tp_vectorcall_offset*/
     0,                      /*tp_getattr*/
     0,                      /*tp_setattr*/
-    0,                      /*tp_reserved*/
+    0,                      /*tp_as_async*/
     0,                      /*tp_repr*/
     0,                      /*tp_as_number*/
     0,                      /*tp_as_sequence*/
@@ -15155,10 +15155,10 @@
     0,                            /* tp_itemsize */
     /* Slots */
     (destructor)unicode_dealloc,  /* tp_dealloc */
-    0,                            /* tp_print */
+    0,                            /* tp_vectorcall_offset */
     0,                            /* tp_getattr */
     0,                            /* tp_setattr */
-    0,                            /* tp_reserved */
+    0,                            /* tp_as_async */
     unicode_repr,                 /* tp_repr */
     &unicode_as_number,           /* tp_as_number */
     &unicode_as_sequence,         /* tp_as_sequence */
@@ -15483,10 +15483,10 @@
     0,                  /* tp_itemsize */
     /* methods */
     (destructor)unicodeiter_dealloc,    /* tp_dealloc */
-    0,                  /* tp_print */
+    0,                  /* tp_vectorcall_offset */
     0,                  /* tp_getattr */
     0,                  /* tp_setattr */
-    0,                  /* tp_reserved */
+    0,                  /* tp_as_async */
     0,                  /* tp_repr */
     0,                  /* tp_as_number */
     0,                  /* tp_as_sequence */