RFR: [8u] Bulk backports to sh/jdk8u

[Zhengyu Gu]

SA and cleanup look good.

-Zhengyu

On 01/17/2018 03:23 AM, Roland Westrelin wrote:
> 
>> http://cr.openjdk.java.net/~shade/shenandoah/backports/jdk8u-20180116/webrev.01/
> 
> C2 changes look ok.
> 
> Roland.
>