RFR(s): 8170860: Get rid of the humanReadableByteCount() method in openjdk/hotspot

[Dmitry Fazunenenko]

Hello,

I'm looking for a couple of reviewers for a simple fix which eliminates 
the code copied from Stack Overflow:

http://cr.openjdk.java.net/~dfazunen/8170860/webrev.00/
https://bugs.openjdk.java.net/browse/JDK-8170860

humanReadableByteCount() method was removed. A standard JDK class 
NumberFormat is used instead. To make the output locale independent '_' 
symbol is explicitly set as the group delimiter. New output will look like:

[allocate #1             ] init: 33_554_432, used: 5_253_664, comm: 
8_388_608, freeRatio ~= 37.4%
[allocate #2             ] init: 33_554_432, used: 8_399_392, comm: 
10_485_760, freeRatio ~= 19.9%
[allocate #3             ] init: 33_554_432, used: 11_545_120, comm: 
13_631_488, freeRatio ~= 15.3%
[allocate #4             ] init: 33_554_432, used: 14_690_848, comm: 
16_777_216, freeRatio ~= 12.4%
[allocate #5             ] init: 33_554_432, used: 17_836_576, comm: 
19_922_944, freeRatio ~= 10.5%
[allocate #6             ] init: 33_554_432, used: 20_982_304, comm: 
23_068_672, freeRatio ~= 9.0%
[allocate #7             ] init: 33_554_432, used: 24_128_032, comm: 
26_214_400, freeRatio ~= 8.0%
[allocate #8             ] init: 33_554_432, used: 27_273_760, comm: 
29_360_128, freeRatio ~= 7.1%

Thanks,
Dima
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