Remove all references to x86 from the root dir (except from in
configure).  Also remove references from the root dir README
by moving that documentation to the x86/README, and touch up
the READMEs at the same time.
Signed-off-by: Andrew Jones <drjones@redhat.com>
Acked-by: Christoffer Dall <christoffer.dall@linaro.org>
[Drop --test-dir, adjust includes. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

Test various combinations of the AC bit and reading/writing into
user pages at CPL=0.

One notable missing test is implicit kernel reads and writes (e.g.
reading the IDT/GDT/LDT/TSS).  The interesting part of this is that
AC must be ignored in ring 3; the processor always behaves as if AC=0.
I skipped this because QEMU doesn't emulate this correctly, and because
right now there's no kvm-unit-tests infrastructure to run code in ring
3 at all.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>