FindHDF5: Fix for Cray HDF5 Fortran module filename which can be capitalized
The Cray Fortran compiler by default generates a capitalized HDF5.mod
file, instead of hdf5.mod
which is being searched for. This MR adds an extra HDF5.mod
filename to accept in FindHDF5.cmake
Topic-rename: FindHDF5-cray
Edited by Brad King