updated for version 7.3.621
Problem:    Compiler warnings on 64 bit windows.
Solution:   Add type casts. (Mike Williams)
diff --git a/src/version.c b/src/version.c
index 0be8c2b..b8a396d 100644
--- a/src/version.c
+++ b/src/version.c
@@ -715,6 +715,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    621,
+/**/
     620,
 /**/
     619,