before we catch it (script only runs for a second and we poll at 
the same interval, so we might not even seen it in RUNNING state, 
and report that as an ERROR).

tested logic on bluegene system, seems to work fine, haven't tested on a system that allows passthroughs, should work, but haven't tested yet.

added logic to be able to simulate the real system a little better, hoping to be able to simlify the bridge allocation logic

patch.1.2.0-pre6.061117.cpuinfo from dan palermo.

changed images from defaultblrtsimage back to blrtsimage and the alternative images to altblrtimage...

Includes Mark Grondona's addition of the slurm_spank_local_user_init()
function, with my massaging to make it more compatible with the trunk code.
However, there is no support in the trunk API task launch code (and therefore
slaunch) for slurm_spank_local_user_init().  I will add that in a future
commit.