FTBFS on Fedora with non-x86_64 architectures

[Conan-Kudo]

I'm packaging ntfs2btrfs for Fedora, and I was caught by surprise by it failing to build on all architectures other than x86_64.

I've restricted it to x86_64 only for now, but it'd be nice if it could work on any architecture.

[maharmstone]

Thanks Neal. Could you please retry against the latest master? If it works, I'll release it as the latest version.

I think it's probably a good idea if you keep s390x masked though - I've not done any endian-proofing.

[Conan-Kudo]

Seems like it works!

[maharmstone]

Excellent. I've released a new version today containing the fixes.