Update optimization in makefile.
-Initialize _Wext for local geometry only.
-Add up _WpsrD at end so it can be grabbed summed/
-Broadcast _Wcoh100 and _dWcoh upon calculation on node 0.
-Do more plateau calcs on node 0 only.
-Add up _Wext, _Wspr, _WsprD, _Wkin for energy balance method
Localize checkstable()
Reduce printing in energBalance().
Add up _DSum and _numFrag. TODO: concatenate fragLoc so that statistics and histogram can be calculated by node 0.
Have most of timeStepRefine() done by node 0, share results (_Dt, _deactive, _deactive2) with others.