It's easier to recalculate the number in the one place it's used as
having a separate variable to track it. It will also help with moving
the NUMA code to the separate module.
Name it virNumaMemAccess and add it to conf/numa_conf.[ch]
Note that to avoid a circular dependency the type of the NUMA cell
memAccess variable was changed to int. It will be turned back later
after the circular dependency will not exist.
For weird historical reasons NUMA cells are added as a subelement of
<cpu> while the actual configuration is done in <numatune>.
This patch splits out the cell parser code from cpu config to NUMA
config. Note that the changes to the code are minimal just to make it
work and the function will be refactored in the next patch.
For a while now there are two places that gather information about NUMA
related guest configuration. While the XML can't be changed we can at
least store the data in one place in the definition.
Rename the numatune_conf.[ch] files to numa_conf as later patches will
move the rest of the definitions from the cpu definition to this one.
