patch 9.0.1283: the code for setting options is too complicated

Problem:    The code for setting options is too complicated.
Solution:   Refactor the do_set() function. (Yegappan Lakshmanan, Lewis
            Russell, closes #11945)

src/version.c

@@ -695,6 +695,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1283,
 /**/
     1282,
 /**/