Jim Fehlig 4ffb21c89a libxl: set dom0 state to running
Commit 45697fe5 added dom0 to driver->domains, but missed
setting its state to 'running'

$ virsh list
 Id    Name                           State
----------------------------------------------------
 0     Domain-0                       shut off
2015-07-10 11:36:57 -06:00
..