* elfcode.h (write_relocs): Make static. Use PTR argument as a

	* elfcode.h (write_relocs): Make static.  Use PTR argument as a
	pointer to a boolean variable set to true if something fails.
	Cast to PTR rather than void *.
	(sym_is_global): Rewrite for clarity.
	(map_program_segments): If the program header size is too small,
	call _bfd_error_handler and return failure rather than aborting.
	(NAME(bfd_elf,write_object_contents)): Pass boolean variable when
	calling write_relocs.
	(elf_symbol_from_bfd_symbol): Use BFD_ASSERT rather than abort.
	(struct elf_info_failed): Define.
	(NAME(bfd_elf,size_dynamic_sections)): Declare variables in inner
	blocks.  Pass elf_info_failed structure when calling
	elf_export_symbol and elf_adjust_dynamic_symbol.
	(elf_export_symbol): Treat data argument as elf_info_failed rather
	than bfd_link_info.  Set failed field on error.
	(elf_adjust_dynamic_symbol): Likewise.
	(struct elf_finfo_failed): Define.
	(elf_bfd_final_link): Pass elf_finfo_failed structure when calling
	elf_link_output_extsym.  Use BFD_ASSERT rather than abort.
	(elf_link_output_extsym): Treat data argument as elf_finfo_failed
	rather than elf_final_link_info.  Set failed field on error.
	(elf_link_input_bfd): Use BFD_ASSERT rather than abort.
	(elf_reloc_link_order): Likewise.