[Isolate-interest] Isolate equals(), hashCode(), toString()

[Doug Lea]

Curt Cox wrote:
> Doug,
> 
> In equals():
 > ...

Thanks! We'll improve, liberally adapting your suggestions!

> 
> The release notes describe the format of this string in this release."
>  
> And I'll still curious about whatever release notes are behind that broken
> link.

Us too :-)
We'll have to more clearly distinguish those parts that are "spec"
vs properties of reference implementation.

-Doug