New EasyConfigs for HDF5-serial, ie HDF5 without MPI support, compiled with simple toolchain with no MPI

These EasyConfig files are based on the HDF5-serial EasyBlock which allows to compile HDF5 without MPI support.

The pull request for the corresponding EasyBlock is here:
https://github.com/hpcugent/easybuild-easyblocks/pull/290