Added empty fspSolver module code
Added sweeperUtils.f90 and fspSolver.f90 to Makefile
Filled in definition for sweeperType
Adding sweeperUtils mdoule

This module defines all of the TYPES needed by the sweeperType. Any
additional TYPE definitions or methods needed to properly reproduce
the MPACT MOC Sweeper should be added in this module.  Only the
sweeperType, sweep methods, and data read-in methods should be
elsewhere.