RFR: 8241001: Improve logging in the ConcurrentGCBreakpoint mechanism

[Kim Barrett]

> On Mar 19, 2020, at 4:00 AM, Stefan Johansson <stefan.johansson at oracle.com> wrote:
>> On 3/19/20 5:41 AM, Kim Barrett wrote:
>>> Please review this change to the logging output produced by the
>>> ConcurrentGCBreakpoint facility.
>>> […]
>>> CR:
>>> https://bugs.openjdk.java.net/browse/JDK-8241001
>>> Webrev:
>>> https://cr.openjdk.java.net/~kbarrett/8241001/open.00/
>> 
>> Looks good!
> Looks good to me too,
> Stefan

Thanks.