* bfd-in.h (bfd_print_symbol_type_hopw enum): Add new option

	* bfd-in.h (bfd_print_symbol_type_hopw enum):   Add new option
	bfd_print_symbol_nm, for use by nm.
	* aoutx.h (NAME(aout,print_symbol)):  Add code for new
	bfd_print_symbol_nm option, to print in nm format.
	* coffcode.h (coff_print_symbol), ieee.c (ieee_print_symbol)
	oasys.c (oasys_print_symbol):  Provide stub implementations
	for bfd_print_symbol_nm.
	* syms.c:  New function bfd_decode_symclass, used by nm printer.
	New function bfd_stab_name to look up string name of stab code.