libmvec requires x86?

[David Miller]

From: "Timothy Pearson" <kb9vqf@pearsoncomputing.net>
Date: Mon, 21 Dec 2015 12:58:18 -0600

> We cannot use modern x86 hardware for internal security reasons, and
> it came as something of a surprise that relatively advanced features
> of glibc are only supported on x86, even though functionally
> equivalent SIMD capabilities exist on other architectures (e,g,
> POWER8).

It should be a surprise at all, features get implemented because the
resources necessary to do so exist.

And x86 hands down gets the most developer resources.