RFR(M): 8248401: Refactor/unify RMI gc support functionality

[Kim Barrett]

> On Aug 4, 2020, at 6:02 AM, Thomas Schatzl <thomas.schatzl at oracle.com> wrote:
> New webrevs:
> http://cr.openjdk.java.net/~tschatzl/8248401/webrev.0_to_1 (diff)
> http://cr.openjdk.java.net/~tschatzl/8248401/webrev.1 (full)
> 
> Reran the test 300 times with these changes.
> 
> Thanks,
>  Thomas

This looks good, except for one small thing. The name
"next_whole_heap_examined" seems odd to me. For one thing, it comes
across as a reader rather than a writer. I think better would be
"update_whole_heap_examined_time" or something like that.