[8] RFR 2020-06-16: Critical backports to sh/jdk8

[Roman Kennke]

Looks good, thank you!

Roman

On Tue, 2020-06-16 at 20:51 +0200, Aleksey Shipilev wrote:
> https://cr.openjdk.java.net/~shade/shenandoah/backports/jdk8u-20200616/webrev.01/
> 
> This is a bunch of critical backports to stabilizing sh/jdk8:
>   [backport] 8247310: Shenandoah: pacer should not affect interrupt
> status
>   [backport] 8247474: Shenandoah: Windows build warning after JDK-
> 8247310
>   [backport] 8247358: Shenandoah: reconsider free budget slice for
> marking
>   [backport] 8247560: Shenandoah: heap iteration holds root locks all
> the time
> 
> Testing: hotspot_gc_shenandoah
>