patch 8.0.0911: terminal test takes too long

Problem:    Terminal test takes too long.
Solution:   Instead of "sleep 1" use a Python program to briefly sleep.
diff --git a/src/version.c b/src/version.c
index d88001d..2972730 100644
--- a/src/version.c
+++ b/src/version.c
@@ -770,6 +770,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    911,
+/**/
     910,
 /**/
     909,