* targets.c (bfd_target): Rearranged fields in target vector.

	* targets.c (bfd_target): Rearranged fields in target vector.
	Removed _bfd_debug_info_start, _bfd_debug_info_end and
	_bfd_debug_info_accumulate, which were never used.
	(BFD_JUMP_TABLE_GENERIC, BFD_JUMP_TABLE_COPY): Defined.
	(BFD_JUMP_TABLE_CORE, BFD_JUMP_TABLE_ARCHIVE): Defined.
	(BFD_JUMP_TABLE_SYMBOLS, BFD_JUMP_TABLE_RELOCS): Defined.
	(BFD_JUMP_TABLE_WRITE, BFD_JUMP_TABLE_LINK): Defined.
	* All backends: Changed to use the new BFD_JUMP_TABLE_* macros
	rather than the single JUMP_TABLE macro.  Removed many of the
	weird macro definitions needed to support the monolithic
	JUMP_TABLE.
	* bfd-in.h (JUMP_TABLE): Removed.
	* libbfd-in.h: Define a bunch of macros, and declare a few
	functions, for use with the new BFD_JUMP_TABLE_* macros.
	* libbfd.c (_bfd_dummy_new_section_hook): Removed.
	(bfd_false): Set bfd_error_invalid_operation.
	(bfd_nullvoidptr): Likewise.
	(bfd_n1): New function.
	(_bfd_nocore_core_file_matches_executable_p): Renamed from
	_bfd_dummy_core_file_matches_executable_p.
	(_bfd_nocore_core_file_failing_command): Similar rename.  Set
	bfd_error_invalid_operation.
	(_bfd_nocore_core_file_failing_signal): Likewise.
	(_bfd_generic_get_section_contents): Renamed from
	bfd_generic_get_section_contents.  Changed all callers.
	(_bfd_generic_set_section_contents): Similar rename.
	* ieee.c: #if 0 out ieee_bfd_debug_info_start,
	ieee_bfd_debug_info_end, ieee_bfd_debug_info_accumulate.  They
	were never called.
	* bfd-in2.h: Rebuilt.
	* libbfd.h: Rebuilt.