updated for version 7.3.1223

Problem:    Tests fail on MS-Windows.
Solution:   Avoid depending on OS version. Use DOS commands instead of Unix
            commands. (Taro Muraoka, Ken Takata)

src/version.c

@@ -728,6 +728,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1223,
 /**/
     1222,
 /**/