patch 8.2.4809: various things no6 properly tested

Problem:    Various things no6 properly tested.
Solution:   Add various test cases. (Yegappan Lakshmanan, closes #10259)
diff --git a/src/version.c b/src/version.c
index 7ec4c8a..6800fce 100644
--- a/src/version.c
+++ b/src/version.c
@@ -747,6 +747,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4809,
+/**/
     4808,
 /**/
     4807,