Add log_exit_status sudoers option to log when a command exits.

This option defaults to off.

plugins/sudoers/def_data.c

@@ -577,6 +577,10 @@ struct sudo_defs_types sudo_defs_table[] = {
 	"admin_flag", T_STR|T_BOOL|T_CHPATH,
 	N_("Path to the file that is created the first time sudo is run: %s"),
 	NULL,
+    }, {
+	"log_exit_status", T_FLAG,
+	N_("Log the exit status of commands"),
+	NULL,
     }, {
 	NULL, 0, NULL
     }