RFR: 8264109: Add vectorized implementation for VectorMask.andNot() [v2]

[Xiaohong Gong]

On Fri, 2 Apr 2021 09:59:31 GMT, Ningsheng Jian <njian at openjdk.org> wrote:

>> Xiaohong Gong has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Move the changing to AbstractMask.andNot and revert changes in VectorMask
>>   
>>   Change-Id: Ie3ec8f53cb24526c8e1ccc68038355d024910818
>>   CustomizedGitHooks: yes
>
> LGTM

Thanks for the review @nsjian !

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PR: https://git.openjdk.java.net/jdk/pull/3211