[patch] Fix build probs; change address_class* to pure multi-arch

[Kevin Buettner]

On Oct 25, 11:59am, Andrew Cagney wrote:

> Per my suggestion to Kevin, this patch fixes the current build problems 
> with the non multi-arch targets.
> http://sources.redhat.com/ml/gdb-patches/2002-10/msg00391.html

Thanks!

Kevin