patch 7.4.2228

Problem:    Test files have inconsistant modelines.
Solution:   Don't set 'tabstop' to 2, use 'sts' and 'sw'.

src/version.c

@@ -763,6 +763,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2228,
 /**/
     2227,
 /**/