* readelf.c (ia64_unw_aux_info, ia64_unw_table_entry): Rename from

	* readelf.c (ia64_unw_aux_info, ia64_unw_table_entry): Rename from
	unw_aux_info and unw_table_entry.
	(find_symbol_for_address): Pass symtab and strtab info explicitly.
	(dump_ia64_unwind): Rename unw_{aux_info,table_entry} with ia64_
	prefix.
	(slurp_ia64_unwind_table): Likewise.
	(ia64_process_unwind): Rename from old process_unwind.
	(hppa_unw_aux_info): New.
	(dump_hppa_unwind): New.
	(slurp_hppa_unwind_table): New.
	(hppa_process_unwind): New.
	(process_unwind): Factor out common unwinding checks; dispatch to
	unwind handler based on machine type.