RFR(S) - 8073463: G1 does not mangle freed heap regions

[David Lindholm]

Hi,

Please review this small fix which mangles freed heap regions in G1. I 
took the opportunity to make mangle_unused_area() and 
mangle_unused_area_complete() pure virtual, and null-implemented them in 
compactibleFreeListSpace instead. I also removed 
Space::mangle_region(MemRegion mr) which was never called.


Webrev: http://cr.openjdk.java.net/~mgerdin/david/8073463/webrev/
Bug: https://bugs.openjdk.java.net/browse/JDK-8073463

Testing done: JPRT


Thanks,
David