bfd/

bfd/
	* elf-bfd.h (eh_cie_fde): Move add_fde_encoding and
	per_encoding_relative to u.cie.  Add commentary.
	* elf-eh-frame.c (cie): Remove make_relative.
	(extra_augmentation_string_bytes): Update use of add_fde_encoding.
	(extra_augmentation_data_bytes): Likewise.  Use an FDE's own
	add_augmentation_size field, rather than referring to the CIE.
	(_bfd_elf_parse_eh_frame): Don't set the struct cie
	make_relative field; set the eh_cie_fde field directly.
	Update setting of add_fde_encoding and per_encoding_relative.
	Copy make_relative and add_augmentation_size from the CIE
	to the FDE.
	(_bfd_elf_discard_section_eh_frame): Use the FDE's own
	make_relative field.
	(_bfd_elf_eh_frame_section_offset): Likewise.
	(_bfd_elf_write_section_eh_frame): Update accesses to
	add_fde_encoding and per_encoding_relative.  Use the FDE's
	own make_relative and add_augmentation_size fields.