[PDI/HDF5_per_process] Changing read function

Currently stderr is noisy like a pub during happy hour and the data are not read properly. This update fix those issues.

To check the results, please have a look at the example code used in !50 (closed)

(remove the comment in the fortran example at the end of the main and look at output in ./build/Testing/Temporary/*).

A better test should be done for checking data import with hdf5.