patch 8.0.1729: no comma after last enum item

Problem:    No comma after last enum item.
Solution:   Add a few commas to check if this works for all compilers.  Also
            add a few // comments.
diff --git a/src/version.c b/src/version.c
index edbe2ae..aa1e93f 100644
--- a/src/version.c
+++ b/src/version.c
@@ -763,6 +763,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1729,
+/**/
     1728,
 /**/
     1727,