vcpupin: improve vcpupin definition of virsh vcpupin
When using vcpupin command, we have to speficy comma-separated list as cpulist,
but this is tedious in case the number of phsycal cpus is large.
This patch improves this by introducing special markup "-" and "^" which are
similar to XML schema of "cpuset" attribute.
The example:
# virsh vcpupin Guest 0 0-15,^8
is identical to
# virsh vcpupin Guest 0 0,1,2,3,4,5,6,7,9,10,11,12,13,14,15
NOTE: The expression is sequentially evaluated, so "0-15,^8" is not identical
to "^8,0-15".
Signed-off-by: NTaku Izumi <izumi.taku@jp.fujitsu.com>
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