RFR: Move some rarely called functions from ZStat.hpp to ZStat.cpp

[Per Liden]

Thanks for reviewing!

/Per

On 03/05/2018 03:46 PM, Erik Österlund wrote:
> Hi Per,
> 
> Looks good.
> 
> Thanks,
> /Erik
> 
> On 2018-03-05 15:26, Per Liden wrote:
>> Clean up patch which moves some rarely called functions from ZStat.hpp 
>> to ZStat.cpp.
>>
>> http://cr.openjdk.java.net/~pliden/zgc/zstat_cleanup/webrev.0/
>>
>> /Per
>