RFR (S): 8209700: Remove HeapRegionSetBase::RegionSetKind for a more flexible approach

[Thomas Schatzl]

Hi Paul,

On Wed, 2018-08-22 at 18:12 +0000, Hohensee, Paul wrote:
> Lgtm,
> 
> Paul

  thanks for your review. Pushed this and a few dependent and already
reviewed changes :)

Thanks,
  Thomas