Fix num-cores bootstrapping issue
Fix num-cores bootstrapping issue

The determination for number of cores depended on the opsys value loaded
from the profile which requires the number of cores to be passed to it.

Resolve the circular dependency by checking uname -s.  It's not ideal
but I don't see a cleaner fix.

jrmarino/synth,jrmarino/synth,jrmarino/synth,jrmarino/synth