[vector] Draft PR for JEP 417 support of masking in hardware

[Paul Sandoz]

Ooops, thanks for noticing, applied.

> On Oct 11, 2021, at 8:19 PM, Ningsheng Jian <Ningsheng.Jian at arm.com> wrote:
> 
> Thank you Paul for the work!
> 

Sandhya has also been helping behind the scenes.

Paul.

> I did a diff to vectorIntrinsics branch, and found that two recent commits may have been missed:
> 
> https://urldefense.com/v3/__https://github.com/openjdk/panama-vector/pull/139__;!!ACWV5N9M2RV99hQ!fGj4hW1u3wxaOI7dmsmqJhGIdRdzEEPDueMBr_XW1Qse3WqhxUDmTHi6PiyRYchrDA$ https://urldefense.com/v3/__https://github.com/openjdk/panama-vector/pull/142__;!!ACWV5N9M2RV99hQ!fGj4hW1u3wxaOI7dmsmqJhGIdRdzEEPDueMBr_XW1Qse3WqhxUDmTHi6Pizv7BKAzw$ 
> Otherwise, looks good to me.
> 
> Thanks,
> Ningsheng
> 
> 
> On 10/9/21 8:19 AM, Paul Sandoz wrote:
>> Hi,
>> Here is the draft PR to jdk for support of masking in hardware:
>>   https://urldefense.com/v3/__https://github.com/openjdk/jdk/pull/5873__;!!ACWV5N9M2RV99hQ!fGj4hW1u3wxaOI7dmsmqJhGIdRdzEEPDueMBr_XW1Qse3WqhxUDmTHi6Pixvs8c3zQ$ Before I make it ready for review can people please check the contributor list, as I may have missed some contributors.
>> I ran relevant tests using our internal testing infrastructure. All tests passed.
>> Paul.
>