Add new ppa for OpenMPI and HDF5

- OpenMPI > 1.5.1 (atm 1.5.4)
- HDF5 > 1.8.6 (atm 1.8.11)
- thx to the "donator PPAs" of Jose Sabater (@jsm-8, hdf5 1.8.11)
  and James Page (@james-page, OpenMPI dependency)
Increase OpenMPI Dependency to 1.5.1

http://svn.open-mpi.org/svn/ompi/branches/v1.5/NEWS

- Use memmove (instead of memcpy) when necessary (e.g., source and
  destination overlap).
- related to zero read/write features in #83
Merge pull request #88 from ax3l/topic-OpenMPI1.5x

Travis: OpenMPI 1.5.1+ and HDF5 1.8.6+