This is actually work in progress, as it's just the base function which 
should be used libxc's setup_guest().
It mimics the current XendDomainInfo.py:find_relaxed_node() code, which 
can eventually go away.
The function iterates over all VCPUs in all domains to determine each 
node's load. It considers VCPUs pinned to single nodes vs. unpinned 
VCPUs which result in a lower load for each node (although the sum is 
equal). Also added is the amount of free memory, this can be used to 
sequentially determine the best host node for each guest node.

Signed-off-by: Andre Przywara <andre.przywara@amd.com>

Regards,
Andre.

-- 
Andre Przywara
AMD-Operating System Research Center (OSRC), Dresden, Germany
Tel: +49 351 488-3567-12
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