[commit, 6.0] Fix fnchange ARI problems

[Andrew Cagney]

>> Mark, should the original files be called x86-64-*?
> 
> 
> No, he mentioned in his original posting that the FreeBSD port (like
> the architecture, now) is called amd64.

All the files for that architecture should be called x86-64-* xor amd64-*.

Andrew