RFR (S): 8027295: Free CSet takes ~50% of young pause time

[Thomas Schatzl]

Hi all,

  Bengt offered to review the change: he had two (three) comments:

- OtherTable::clear_locked() did not have a method body and was
unreferenced.

- in the declaration of the G1CollectedHeap::free_region() method (in
both the hpp and cpp files), every parameter should have its own line.

All fixed in:

http://cr.openjdk.java.net/~tschatzl/8027295/webrev.5/

Change to last version:

http://cr.openjdk.java.net/~tschatzl/8027295/webrev.5.diff/

Testing:
JPRT

Thomas