Fixed startd to not choke on domains that have argv >= 2 but neither core= nor spawnflags=.
Fixed startd to not choke on domains that have argv >= 2 but neither core= nor spawnflags=.

Examples:
* anything that has 'auto' has argv == 2
* The serial driver on the pandaboard has argv == 3
* angler has argv == 2

kishoredbn/barrelfish,BarrelfishOS/barrelfish,BarrelfishOS/barrelfish,BarrelfishOS/barrelfish,8l/barrelfish,utsav2601/cmpe295A,mslovy/barrelfish,utsav2601/cmpe295A,utsav2601/cmpe295A,BarrelfishOS/barrelfish,8l/barrelfish,mslovy/barrelfish,mslovy/barrelfish,linusyang/barrelfish,mslovy/barrelfish,kishoredbn/barrelfish,8l/barrelfish,utsav2601/cmpe295A,BarrelfishOS/barrelfish,utsav2601/cmpe295A,8l/barrelfish,BarrelfishOS/barrelfish,kishoredbn/barrelfish,linusyang/barrelfish,BarrelfishOS/barrelfish,mslovy/barrelfish,utsav2601/cmpe295A,BarrelfishOS/barrelfish,8l/barrelfish,mslovy/barrelfish,8l/barrelfish,kishoredbn/barrelfish,linusyang/barrelfish,BarrelfishOS/barrelfish,kishoredbn/barrelfish,linusyang/barrelfish,linusyang/barrelfish,kishoredbn/barrelfish