patch 8.0.0314: getcmd*() functions are not tested

Problem:    getcmdtype(), getcmdpos() and getcmdline() are not tested.
Solution:   Add tests. (Yegappan Lakshmanan)

src/version.c

@@ -764,6 +764,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    314,
 /**/
     313,
 /**/