patch 7.4.1484

Problem:    Channel "err-io" value "out" is not supported.
Solution:   Connect stderr to stdout if wanted.

src/version.c

@@ -743,6 +743,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1484,
 /**/
     1483,
 /**/