6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
Summary: Don't move tops of the chunks in ensure_parsibility(). Handle the situation with Solaris when a machine has a locality group with no memory.
Reviewed-by: apetrusenko, jcoomes, ysr
9a66ca7c79fab293c1bb0534e0d208c7e4f58b01 jdk7-b24
58039502942e52f4144a33f36290a2bd2f3581e6 jdk7-b25