patch 8.0.1321: can't build huge version with Athena

Problem:    Can't build huge version with Athena. (Mark Kelly)
Solution:   Move including beval.h to before structs.h. Include beval.pro like
            other proto files.
diff --git a/src/version.c b/src/version.c
index 324a360..48e3293 100644
--- a/src/version.c
+++ b/src/version.c
@@ -772,6 +772,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1321,
+/**/
     1320,
 /**/
     1319,