[PATCH][AArch64] request to push AArch64 patches to release 3.4 branch

[Tim Northover]

Hi Ana & Bill,

> Committed revision 195326
> Committed revision 195329
> Committed revision 195327
> Committed revision 195330

I'm happy for these to go in. The interested parties are keen and they
should only affect AArch64 with -mattr=+neon, which I don't think is
being widely used at the moment (and itself almost certainly won't be
made worse).

Cheers.

Tim.