patch 8.0.0314: getcmd*() functions are not tested

Problem:    getcmdtype(), getcmdpos() and getcmdline() are not tested.
Solution:   Add tests. (Yegappan Lakshmanan)
diff --git a/src/version.c b/src/version.c
index 261a55d..4da417b 100644
--- a/src/version.c
+++ b/src/version.c
@@ -765,6 +765,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    314,
+/**/
     313,
 /**/
     312,