patch 7.4.1983

Problem:    farsi.c and arabic.c are included in a strange way.
Solution:   Build them like other files.

src/version.c

@@ -758,6 +758,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1983,
 /**/
     1982,
 /**/