[8u] 2020-08-11, Bulk backports to sh/jdk8

[Roman Kennke]

Looks good to me, thank you!

Cheers,
Roman


On Tue, 2020-08-11 at 10:56 +0200, Aleksey Shipilev wrote:
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> Incorrect message format
> https://cr.openjdk.java.net/~shade/shenandoah/backports/jdk8u-20200811/webrev.01/
> 
> This backports a bunch of fixes/improvements to sh/jdk8:
> 
>  [backport] 8248041: Shenandoah: pre-Full GC root updates may miss
> some roots
>  [backport] 8249560: Shenandoah: Fix racy GC request handling
>  [backport] 8249801: Shenandoah: Clear soft-refs on requested GC
> cycle
>  [backport] 8241574: Shenandoah: remove
> ShenandoahAssertToSpaceClosure
>  [backport] 8241007: Shenandoah: remove
> ShenandoahCriticalControlThreadPriority support
> 
> Testing: hotspot_gc_shenandoah {fastdebug,release}
>