patch 8.0.0953: get "no write since last change" error in terminal window

Problem:    Get "no write since last change" error in terminal window.
Solution:   Use another message when closing a terminal window. Make ":quit!"
            also end the job.

src/version.c

@@ -769,6 +769,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    953,
 /**/
     952,
 /**/