RFR: Add two missing weak roots sets

[coleen.phillimore at oracle.com]

Looks good to me also.
Coleen

On 1/18/18 8:40 AM, Stefan Karlsson wrote:
> Hi all,
>
> Please review this patch to add two missing weak roots sets
>
> http://cr.openjdk.java.net/~stefank/zgc/zMissingWeakRoots/webrev.01/
>
> The JvmtiExport::weak_oops_do call was moved in the upstream 
> repository, and TRACE_WEAK_OOPS_DO was recently introduced for the 
> Trace API.
>
> This was found while testing some jdi tests that used the JvmtiTagMap.
>
> Thanks,
> StefanK