RFR [9]: Bulk backport to sh/jdk9

[Roman Kennke]

Am 20.11.2017 um 21:34 schrieb Aleksey Shipilev:
> http://cr.openjdk.java.net/~shade/shenandoah/backports/jdk9-20171120/webrev.01/
>
> Important performance changes:
>
> rev 13743 : [backport] Passive should opt-in the barriers, not opt-out
> rev 13744 : [backport] Enable biased locking for Shenandoah by default
>
> Testing: hotspot_gc_shenandoah {fastdebug|release}
>
> Thanks,
> -Aleksey
>
>
Ok