RFR: Rename fields in (SA) ShenandoahHeap.java to omit 'Regions' and 'Field' suffix

[Roman Kennke]

> On 11/30/18 1:30 PM, Roman Kennke wrote:
>> ... makes field naming consistent and less misleading (it is *not* the
>> number of used vs. committed regions).
>>
>> Testing: tier1_gc_shenandoah (should be a compile-time-issue only)
> 
> There's no webrev in this RFR, but I believe it is a clean dissect from the previous RFR?

Oops:
http://cr.openjdk.java.net/~rkennke/rename-sa-fields/webrev.00/

Roman