* elf-bfd.h (struct elf_backend_data): Add action_discarded.

	* elf-bfd.h (struct elf_backend_data): Add action_discarded.
	(enum action_discarded): Move from..
	* elflink.c (enum action_discarded): ..here.
	(_bfd_elf_default_action_discarded): Rename from elf_action_discarded.
	Remove target specific section checks.
	(elf_link_input_bfd): Adjust.
	* elfxx-target.h (elf_backend_action_discarded): Define.
	(elfNN_bed): Init new field.
	* bfd-in.h (_bfd_elf_default_action_discarded): Declare.
	* bfd-in2.h: Regenerate.
	* elf-hppa.h (elf_hppa_action_discarded): New function.
	* elf32-hppa.c (elf_backend_action_discarded): Define.
	* elf64-hppa.c (elf_backend_action_discarded): Define.
	* elf32-ppc.c (ppc_elf_action_discarded): New function.
	(elf_backend_action_discarded): Define.