* elf-bfd.h (bfd_elf_is_group_section): Declare.
	* elf.c (bfd_elf_is_group_section): New function.
	* elfxx-target.h (bfd_elfNN_bfd_is_group_section
	* section.c (bfd_generic_is_group_section): New function.
	* targets.c (struct bfd_target): Add _bfd_is_group_section field.
	(BFD_JUMP_TABLE_LINK): Adjust.
	* aout-adobe.c (aout_32_bfd_is_group_section): Define.
	* aout-target.h (MY_bfd_is_group_section): Define.
	* aout-tic30.c (MY_bfd_is_group_section): Define.
	* bfd.c (bfd_is_group_section): Define.
	* binary.c (binary_bfd_is_group_section): Define.
	* bout.c (b_out_bfd_is_group_section): Define.
	* coff-alpha.c (_bfd_ecoff_bfd_is_group_section): Define.
	* coff-mips.c (_bfd_ecoff_bfd_is_group_section): Define.
	* coff-rs6000.c (rs6000coff_vec, pmac_xcoff_vec): Adjust.
	* coff64-rs6000.c (rs6000coff64_vec, aix5coff64_vec): Adjust.
	* coffcode.h (coff_bfd_is_group_section): Define.
	* i386msdos.c (msdos_bfd_is_group_section): Define.
	* i386os9k.c (os9k_bfd_is_group_section): Define.
	* ieee.c (ieee_bfd_is_group_section): Define.
	* ihex.c (ihex_bfd_is_group_section): Define.
	* libbfd-in.h (_bfd_nolink_bfd_is_group_section): Define.
	* mach-o.c (bfd_mach_o_bfd_is_group_section): Define.
	* mmo.c (mmo_bfd_is_group_section): Define.
	* nlm-target.h (nlm_bfd_is_group_section): Define.
	* oasys.c (oasys_bfd_is_group_section): Define.
	* pef.c (bfd_pef_bfd_is_group_section): Define.
	* ppcboot.c (ppcboot_bfd_is_group_section): Define.
	* srec.c (srec_bfd_is_group_section): Define.
	* tekhex.c (tekhex_bfd_is_group_section): Define.
	* versados.c (versados_bfd_is_group_section): Define.
	* vms.c (vms_bfd_is_group_section): Define.
	* xsym.c (bfd_sym_bfd_is_group_section): Define.
	* bfd-in2.h: Regenerate.
	* libbfd.h: Regenerate.