 - Don't rely on a side effect of sched_prio() to set the initial ts_runq    for thread0.  Set it directly in sched_setup().  This fixes traps on boot    seen on some machines.
 - Don't rely on a side effect of sched_prio() to set the initial ts_runq
   for thread0.  Set it directly in sched_setup().  This fixes traps on boot
   seen on some machines.

Reported by:	phk

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase