updated for version 7.4.509

Problem:    Users are not aware their encryption is weak.
Solution:   Give a warning when prompting for the key.

src/version.c

@@ -741,6 +741,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    509,
 /**/
     508,
 /**/