Minimal NSE related changes on the mainbed so that I can work
in the dev tree. I'm tired of problems on the mini that wastes my time. Changes include 2 new tmcd commands: tmcc routelist returns the routes for all the vnodes hosted on a pnode. tmcc role returns the role of a reserved node, like 'virthost' or 'simhost. tmcc ifconfig now reports an RTABID field which is calculated in assign wrapper. All the new changes in assign wrapper will be checked in after I finish testing. All the DB changes are in: simnode_capacity in node_types, rtabid in interfaces and veth_interfaces. New NSE event_objtype and NSEEVENT event_eventtype. Changed the erole field in the reserved table to have 'simhost' instead of 'simnode'. Changed the correspoding libdb subroutines.