RFR (sh/jdk11): Backport remaining changes

[Aleksey Shipilev]

On 8/4/19 2:56 PM, Roman Kennke wrote:
> This completes the recent round of backports to sh/jdk11. It includes
> refactorings in roots processing and traversal testing improvements.
> 
> Changes:
> http://cr.openjdk.java.net/~rkennke/backport-jdk11-2019-08-04/changes.txt
> Full webrev:
> http://cr.openjdk.java.net/~rkennke/backport-jdk11-2019-08-04/webrev.00/

Looks fine!

-- 
Thanks,
-Aleksey