patch 8.0.0996: Mac: t_RS is echoed on the screne in Terminal.app

Problem:    Mac: t_RS is echoed on the screne in Terminal.app.  Even though
            $TERM is set to "xterm-256colors" it cannot handle this xterm
            escape sequence.
Solution:   Recognize Terminal.app from the termresponse and skip sending t_RS
            if it looks like Terminal.app.
diff --git a/src/version.c b/src/version.c
index 9ce38f0..430ac8b 100644
--- a/src/version.c
+++ b/src/version.c
@@ -770,6 +770,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    996,
+/**/
     995,
 /**/
     994,