[8u60] RFR backport of 8058801: G1TraceReclaimDeadHumongousObjectsAtYoungGC only prints humongous object liveness output when there is at least one candidate humongous object

[Thomas Schatzl]

Hi all,

  can I have reviews for the backport of 8058801:
G1TraceReclaimDeadHumongousObjectsAtYoungGC only prints humongous object
liveness output when there is at least one candidate humongous object to
8u60?

It did only apply with minor changes, so I need re-reviews. The problem
has been that in jdk9 isHumongous() (and friends) have been renamed to
is_humongous().

Full 8u60 changeset:
http://cr.openjdk.java.net/~tschatzl/8058801-8u60/webrev.8u60/
Diff changest:
http://cr.openjdk.java.net/~tschatzl/8058801-8u60/webrev.8u60.fix/

CR:
https://bugs.openjdk.java.net/browse/JDK-8058801

Original change:
http://hg.openjdk.java.net/jdk9/jdk9/hotspot/rev/744f961b9393

Testing: jprt

Thanks,
  Thomas