* libecoff.h (struct ecoff_backend_data): Add adjust_headers

	* libecoff.h (struct ecoff_backend_data): Add adjust_headers
	field.
	* ecoff.c (ecoff_sec_to_styp_flags): Check for various Alpha
	sections, and set styp correctly for them: .got, .hash, .dynamic,
	.liblist, .rel.dyn, .conflic, .dynstr, .dynsym, .comment.
	(_bfd_ecoff_styp_to_sec_flags): Check for various Alpha section
	types.
	(ecoff_sort_hdrs): New static function.
	(ecoff_compute_section_file_positions): Return boolean, not void.
	Sort the sections by VMA before looking through them.  Put the
	first non SEC_ALLOC section on a new page.  Put every SEC_ALLOC
	section on an appropriate boundary within the page.
	(ecoff_compute_reloc_file_positions): Check return value of
	ecoff_compute_section_file_positions.
	(_bfd_ecoff_set_section_contents): Likewise.
	(_bfd_ecoff_write_object_contents): Check for various Alpha
	section types when incrementing text_size and data_size.  Call
	adjust_headers backend function if it exists.
	* coff-alpha.c (alpha_adjust_headers): New static function.
	(alpha_ecoff_backend_data): Initialize adjust_headers field.
	* coff-mips.c (mips_ecoff_backend_data): Likewise.
PR 8141.