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

[Curt Cox]

In Isolate:

equals - this appears to be the definition of equals from Object.  If not,
some clarification is needed.  If so, why is this needed?

hashCode - same comments as equals.

toString - Is the intent to say that "Two Isolates that are not equivalent
will always return StringS that are not equivalent.  Two Isolates that are
equivalent may return the same or different StringS."?  Whatever the intent,
it should be expressed intuitively, as well as rigorously.

Also, the link is broken.  

- Curt