RFR (M): 8159984: Remove call to ClassLoaderDataGraph::clear_claimed_marks during the initial mark pause

[Kim Barrett]

> On Sep 20, 2019, at 4:02 AM, Thomas Schatzl <thomas.schatzl at oracle.com> wrote:
>> The additional comments look good.  But shouldn’t the names of those functions refer to “nmethods"
>> rather than (generic) “roots”?  That is,
>> worker_has_discovered_all_strong_nmethods
>> wait_until_all_strong_nmethods_discovered
>> There are certainly strong roots that get looked at after the has_discovered call.
> 
>  fixed in place as suggested. The naming is indeed overloaded here; I wanted to make the names more generic than they need to be.
> 
> Thanks,
>  Thomas

Looks good.