Fixed bugs in set/get functions for initial guess for InputDeck.h
Added NaN checker function to Utilities.
Fixed major bug with definition of alpha for SC.  Improved print to file/print to screen options.
Fixed p-norm to work for p > 2 as well.
Changed from inf norm to L2-norm
Improved efficiency of CMFD and pCMFD functions.
Added method to extract scalar current solution directly.
Forgot to add phi vector in previous commit to output of get_solution()
Added method for calculating error of scalar flux vector
Added new runset for diffusion asymptotics analysis.