patch 7.4.2340

Problem:    MS-Windows: Building with Ruby uses old version.
Solution:   Update to 2.2.X. Use clearer name for the API version. (Ken
            Takata)

src/version.c

@@ -763,6 +763,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2340,
 /**/
     2339,
 /**/