patch 7.4.2227

Problem:    Tab page tests are old style.
Solution:   Change into new style tests. (Hirohito Higashi)

src/version.c

@@ -763,6 +763,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2227,
 /**/
     2226,
 /**/