RFR (S) 8244739: Shenandoah: break superclass dependency on ShenandoahNormalMode

[Roman Kennke]

Ok that makes sense! Patch looks good!

Roman


> RFE:
>   https://bugs.openjdk.java.net/browse/JDK-8244739
> 
> Both ShenandoahPassiveMode and ShenandoahIUMode awkwardly subclass ShenandoahNormalMode, only to get
> initialize_heuristics() implemented. This would be awkward once we rename ShenandoahNormalMode to
> something else.
> 
> Webrev:
>   https://cr.openjdk.java.net/~shade/8244739/webrev.01/
> 
> Testing: hotspot_gc_shenandoah
>