* diagnostic.c (finish_diagnostic): Define.
	(output_do_printf): Use wrap_text instead of output_add_string.
	(default_print_error_function): Avoid embedded '\n'.

	* diagnostic.h (flush_diagnostic_buffer): Declare.

cp/
	* error.c (print_instantiation_context): Don't forget to flush the
	buffer.

From-SVN: r35939