* qemud/conf.c, qemud/driver.c, qemud/internal.h,
        qemud/qemud.c: Merge the ->activevms and ->inactivevms
        into a single ->vms list in order to make things
        easier to manage. Likewise for networks. Also add
        qemudIsActiveVM() and qemudIsActiveNetwork() inline
        functions.