* when traversing a cpu_info.ci_queues list there is no way

from differentiating NICs from other devices. One way to solve

this is prbbly by introducing a 'struct irq', which holds the

actual type of IRQ, or just holds a ref to the 'struct device'

it is part of.

* use bison %locations

* IRQs: since introducing split RX/TX IRQs check the IRQ stats

if they are still correct

* use SIGHUP for reconfiguration

* config: specifying an invalid range does not give an error

* load strategies from DSO, allowing to make the balancing

decision dependant on system configuration.

* strategy "static" { }: make empty curly braces optional

* balance non-NIC IRQs

* implement other strategy, using less CPUs

* use sysfs to read CPU info (road to 'CPU hotplug')

* automake: add libnl version check

* configuration: ban some IRQs?