RFR: Backport outstanding changes jdk12 -> sh/jdk11

[Aleksey Shipilev]

On 4/3/19 4:46 PM, Roman Kennke wrote:
> I'd like to push backports of recent changes coming down from jdk12:
> 
> List of changes:
> http://cr.openjdk.java.net/~rkennke/backports-jdk11-2019-04-03/changes.txt
> 
> Full webrev:
> http://cr.openjdk.java.net/~rkennke/backports-jdk11-2019-04-03/webrev.00/

Looks good. Go.

-Aleksey