arm "neon"

[David Miller]

From: Torbjorn Granlund <tg at gmplib.org>
Date: Mon, 14 Jan 2013 21:32:00 +0100

> I don't know what IFUNC does

IFUNC relocations allow symbols to resolve based upon run-time checks,
such as tests on the cpu type.

This works for both dynamic linkage and static linkage.

In fact, with GLIBC the IFUNC resolver routines are passed the first
word of AT_HWCAP bits as an argument.