[vector] RFC: Add scalable shapes for Arm Scalable Vector Extension

[Ningsheng Jian (Arm Technology China)]

Hi Vladimir,

> 
> > 1) VectorIntrinsics reinterpret/cast changes:
> > http://cr.openjdk.java.net/~njian/vectorapi/01-vectorintrinsics-reinte
> > rpret.webrev1/
> 
> Looks good. Any objections from others?
> 
> > 3) AArch64 specific changes:
> > http://cr.openjdk.java.net/~njian/vectorapi/03-aarch64-sve.webrev1/
> > This is the same as previous version, and yes, this is a standalone change and
> can be applied and pushed cleanly. I am OK to push this first.
> Ok, pushed [1].
> 

Thanks for pushing the AArch64 specific part!

Regards,
Ningsheng