IOSSReader: interpret arrays named vtkGhostType as unsigned char arrays
Data arrays in Exodus files are limited to floats/reals. When an array named "vtkGhostType" is in the data file, it will be a float/real. To use it as a ghost array, interpret it to be a ghost array and cast it to a vtkUnsignedCharArray
so that ParaView treats it as a ghost array.
Edited by Cory Quammen