patch 8.0.1605: terminal test is a bit flaky

Problem:    Terminal test is a bit flaky.
Solution:   Check for the shell prompt.  Use more lambda functions.
diff --git a/src/version.c b/src/version.c
index 36e94b1..3236096 100644
--- a/src/version.c
+++ b/src/version.c
@@ -767,6 +767,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1605,
+/**/
     1604,
 /**/
     1603,