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.

src/version.c

@@ -762,6 +762,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1729,
 /**/
     1728,
 /**/