This should be mostly cosmetic, but it causes switches to number
their ports consistently with OpenFlow 1.0, which starts at 1.
For older versions of OpenFlow, SWITCH_PORT_BASE may be set to zero.

Interactive commands should "work", sort of.

OpenFlow versions > v0.9 require this.

Only tested w/FatTree topo - it's almost a guarantee that this breaks
every other topology.

The OVS interface for this moved to ovs-openflowd.

This functionality was never there for the user-space switch.  Now it's
in.

OVS1.0.1 does not work with veth pairs.

Remove all OpenFlow Ref kmod stuff.

(In user, kernel and ovsk switch classes.)