8202286: Allocation of old generation of Java heap on alternate memory devices
Enable an experimental feature in HotSpot JVM to allocate old generation of G1 GC on an alternative memory device, such as NV-DIMMs.
Reviewed-by: sangheki, sjohanss
With UseTransparentHugePages we always need to pretouch on small page size as the underlying memory could currently be allocated as either small or large pages.
Reviewed-by: shade, sjohanss
