Creating platform agnostic paths
Merge branch 'DCRedefine' of ssh://github.com/dream3d/DREAM3D into DCRedefine
Fixed leaking HDF5 group id that was not closed
Putting check for empty output file first so the error would get reported no matter what.
Fixes to allow Stats Generator to be compiled. Tested creating a simple synthetic and it seems to work.
Tests now look for test input data files in a separate directory which should have a specific internal hierarchy but the actual directory can be located anywhere on the users system. The CMake variable to set is DREAM3D_DATA_DIR.