patch 8.0.0400: some tests have a one second delay

Problem:    Some tests have a one second delay.
Solution:   Add --not-a-term in RunVim().
diff --git a/src/version.c b/src/version.c
index 5a10b47..fd4cdb1 100644
--- a/src/version.c
+++ b/src/version.c
@@ -765,6 +765,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    400,
+/**/
     399,
 /**/
     398,