PR 9798
* bucomm.c (bfd_nonfatal_message): Use bfd_get_archive_filename.
(bfd_get_archive_filename): Constify param.
* bucomm.h (bfd_get_archive_filename): Update prototype.
* objcopy.c (RETURN_NONFATAL): Delete.
(copy_unknown_object): Don't call bfd_get_archive_filename for
bfd_nonfatal_message filename, instead just pass bfd.
(copy_object): Likewise.
(copy_archive, copy_file): Likewise. Expand RETURN_NONFATAL. On
bfd_close errors, do not pass the bfd to bfd_nonfatal_message.
(setup_bfd_headers): Fix error message.