patch 8.1.1536: popup select test still fails on Mac

Problem:    Popup select test still fails on Mac.
Solution:   Set 'clipboard' to "autoselect"
diff --git a/src/version.c b/src/version.c
index 7d4d06d..f379701 100644
--- a/src/version.c
+++ b/src/version.c
@@ -778,6 +778,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1536,
+/**/
     1535,
 /**/
     1534,