Refactor QBase::scale() slightly so that scfact is only computed once.
Refactor QBase::scale() slightly so that scfact is only computed once.

Mbewu/libmesh,Mbewu/libmesh,Mbewu/libmesh,Mbewu/libmesh,Mbewu/libmesh,Mbewu/libmesh,Mbewu/libmesh,Mbewu/libmesh,Mbewu/libmesh