[8] RFR: 2020-05-18, Bulk backports to sh/jdk8

[rkennke at redhat.com]

This looks good to me!

Thanks,
Roman

On Mon, 2020-05-18 at 14:40 +0200, Aleksey Shipilev wrote:
> https://cr.openjdk.java.net/~shade/shenandoah/backports/jdk8u-20200518/webrev.01/
> 
> This mostly backports the new logging to sh/jdk8:
>   [backport] 8243494: Shenandoah: set counters once per cycle
>   [backport] 8225216: gc/logging/TestMetaSpaceLog.java doesn't work
> for Shenandoah
>   [backport] 8239786: Shenandoah: print per-cycle statistics
>   [backport] 8243848: Shenandoah: Windows build fails after JDK-
> 8239786
>   [backport] 8243573: Shenandoah: rename GCParPhases and related code
>   [backport] 8244180: Shenandoah: carry Phase to
> ShWorkerTimingsTracker explicitly
>   [backport] 8244226: Shenandoah: per-cycle statistics contain worker
> data from previous cycles
>   [backport] 8244326: Shenandoah: global statistics should not accept
> bogus samples
> 
> It took significant time to adjust the patches for 8u, so please
> review carefully.
> 
> Testing: hotspot_gc_shenandoah {fastdebug,release}, eyeballing the gc
> logs
>