emul.linux on amd64

[tekk]

I know that at least in 2004 it was considered to be unreasonable to try to get 
i386 linux applications working on amd64 openbsd through emul.linux, but how 
much work would be involved to get amd64 linux apps working? Presumably it 
wouldn't quite be as easy as just using 64 bit packages instead of 32 bit, but 
are there too many abi differences?