patch 9.0.0610: global interrupt test fails when run under valgrind

Problem:    Global interrupt test fails when run under valgrind.
Solution:   Use TermWait().
diff --git a/src/version.c b/src/version.c
index d32b926..19a6b5a 100644
--- a/src/version.c
+++ b/src/version.c
@@ -700,6 +700,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    610,
+/**/
     609,
 /**/
     608,