SA: jmap wrong output for MaxNewSize

After fix to 6788173, jmap still does not print value of MaxNewSize correctly.

Heap Configuration:
   MinHeapFreeRatio = 40
   MaxHeapFreeRatio = 70
   MaxHeapSize = 1029701632 (982.0MB)
   NewSize = 2686976 (2.5625MB)
   MaxNewSize = 17592186044415 MB
   OldSize = 5439488 (5.1875MB)
...

There are two problems now:
1. Format is wrong. Before the fix (and all other memory parameters, previously and now) are shown as
   "bytes (mbytes MB)"
or "bytes (gbytes GB)"

2. The value is unreasonably big. It's bigger than MaxHeapSize.