patch 8.0.0634: cannot easily get to the last quickfix list

Problem:    Cannot easily get to the last quickfix list.
Solution:   Add "$" as a value for the "nr" argument of getqflist() and
            setqflist(). (Yegappan Lakshmanan)

src/version.c

@@ -764,6 +764,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    634,
 /**/
     633,
 /**/