toplev.c (report_error_function): Change format of the included-file stack to be more readable.

	* toplev.c (report_error_function): Change format of the
	included-file stack to be more readable.
	* cccp.c (print_containing_files): Likewise.

From-SVN: r4710

gcc/cccp.c

@@ -7987,7 +7987,7 @@ print_containing_files ()
 	first = 0;
 	fprintf (stderr, "In file included");
       } else {
-	fprintf (stderr, ",");
+	fprintf (stderr, ",\n                ");
       }
 
       fprintf (stderr, " from %s:%d", ip->nominal_fname, ip->lineno);