[klibc] Update ash-port to NetBSD-1.6.1

[H. Peter Anvin]

Hannes Reinecke wrote:
> Hi all,
> 
> this patch updates the ash-port of klibc to that one found in 
> NetBSD-1.6.1 instead of the horribly old one currently used. It's a bit 
> longish (appearently there has been some work done between 1993 and 
> today), but now it's even useable on 64-bit systems :-).
> Plus I've added some nice-to-have builtins, e.g. printf.
> 

I have received at least one contribution for this, but it nearly 
doubles the size of what is already the largest binary, by far, in the 
klibc distribution, almost three times the size of the library itself.

I think it needs to be cut down in size to something closer to the original.

	-hpa