 - In kseq_transfer() return if smp has not been started.  - In sched_add(), do the idle check prior to the transfer check so that we    don't try to transfer load from an idle cpu.  This fixes panics caused by    IPIs on UP machines running SMP kernels.
 - In kseq_transfer() return if smp has not been started.
 - In sched_add(), do the idle check prior to the transfer check so that we
   don't try to transfer load from an idle cpu.  This fixes panics caused by
   IPIs on UP machines running SMP kernels.

Reported/Debugged by:	seanc

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