Optimize linking of stabs in sections as used in ELF and COFF.

	Optimize linking of stabs in sections as used in ELF and COFF.
	* stabs.c: New file.
	* libbfd-in.h (_bfd_link_section_stabs): Declare.
	(_bfd_write_section_stabs): Declare.
	(_bfd_write_stab_strings): Declare.
	* libbfd.h: Rebuild.
	* libcoff-in.h (struct coff_section_tdata): Add stab_info field.
	(struct coff_link_hash_table): Add stab_info field.
	* libcoff.h: Rebuild.
	* cofflink.c (_bfd_coff_link_hash_table_init): Initialize
	stab_info field.
	(coff_link_add_symbols): Call _bfd_link_section_stabs if
	appropriate.
	(_bfd_coff_final_link): Write out stab strings hash table.
	(_bfd_coff_link_input_bfd): Handle optimized stabs sections.
	* coff-ppc.c (ppc_bfd_coff_final_link): Write out stab strings
	hash table.
	* elf-bfd.h (struct elf_link_hash_table): Add stab_info field.
	(struct bfd_elf_section_data): Add stab_info field.
	* elf.c (_bfd_elf_link_hash_table_init): Initialize stab_info
	field.
	* elflink.h (elf_link_add_object_symbols): If appropriate, call
	_bfd_link_section_stabs.
	(elf_bfd_final_link): Write out stab strings hash table.
	(elf_link_input_bfd): Handle optimized stabs sections.
	* reloc.c (_bfd_final_link_relocate): Check address against
	_raw_size rather than _cooked_size.
	* Makefile.in: Rebuild dependencies.
	(BFD_LIBS): Add stabs.o
	(BFD_LIBS_CFILES): Add stabs.c.