RFR (S) 8252648: Shenandoah: name gang tasks consistently

[Zhengyu Gu]

Looks fine to me.

-Zhengyu

On 9/1/20 7:13 AM, Aleksey Shipilev wrote:
> RFE:
>    https://bugs.openjdk.java.net/browse/JDK-8252648
> 
> Current uses of AbstractGangTask("...") are all over the place, 
> sometimes they are misleading. Need to clean this up.
> 
> Webrev:
>    https://cr.openjdk.java.net/~shade/8252648/webrev.01/
> 
> Testing: hotspot_gc_shenandoah
>