RFR: Verification levels

[Aleksey Shipilev]

On 06/29/2017 05:53 PM, Aleksey Shipilev wrote:
> Chasing the root set bug with Verifier and "aggressive" is gruesome, because we
> scan lots of things except the root set. It makes sense to introduce
> verification levels, so that one can select to check only the subset of
> interesting things, e.g. the roots alone.
> 
> Webrev:
>   http://cr.openjdk.java.net/~shade/shenandoah/verifier-level/webrev.01/

Should have introduced more levels:
  http://cr.openjdk.java.net/~shade/shenandoah/verifier-level/webrev.02/

-Aleksey