RFR: [9 Backport] Shenandoah string deduplication support

[Aleksey Shipilev]

On 01/10/2018 10:18 PM, Zhengyu Gu wrote:
> Webrev: http://cr.openjdk.java.net/~zgu/shenandoah/sh_strdedup/backport_jdk9/webrev.00/

Thank you, this looks good.

How much was changed compared to sh/jdk10, and are there places we should take a special look at?
I assume G1 changes are the retraction to the upstream jdk9 state?

Thanks,
-Aleksey