patch 8.0.0609: some people still don't know how to quit

Problem:    For some people the hint about quitting is not sufficient.
Solution:   Put <Enter> separately.  Also use ":qa!" to get out even when
            there are changes.

src/normal.c

@@ -8986,7 +8986,7 @@ nv_esc(cmdarg_T *cap)
 #endif
 		&& !VIsual_active
 		&& no_reason)
-	    MSG(_("Type  :quit<Enter>  to exit Vim"));
+	    MSG(_("Type  :qa!  and press <Enter> to abandon all changes and exit Vim"));
 
 	/* Don't reset "restart_edit" when 'insertmode' is set, it won't be
 	 * set again below when halfway a mapping. */

src/version.c

@@ -764,6 +764,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    609,
 /**/
     608,
 /**/