* aout-adobe.c (aout_adobe_set_arch_mach): Check return value of

	* aout-adobe.c (aout_adobe_set_arch_mach): Check return value of
	bfd_default_set_arch_mach.  Accept bfd_arch_m68k as well as
	bfd_arch_unknown.
	* elfcode.h (elf_set_arch_mach): Don't check a list of ELF
	architectures, just see if the desired architecture matches what
	the ELF backend permits.