RFR: 8239533: ZGC: Make the ZProactive flag non-diagnostic

[erik.osterlund at oracle.com]

Hi Per,

Looks good.

Thanks,
/Erik

On 2/20/20 9:26 AM, Per Liden wrote:
> I propose that the ZProactive flag shouldn't be a diagnostic flag, 
> since it's a feature you might want to permanently enable/disable 
> (similar to ZUncommit), rather than something you enable/disable to 
> diagnose an issue.
>
> Bug: https://bugs.openjdk.java.net/browse/JDK-8239533
> Webrev: http://cr.openjdk.java.net/~pliden/8239533/webrev.0
>
> /Per