ior-3.3.0-bp156.4.7

- Use mpi selection macros

- Sync the usage of rados support to architectures where ceph is
  being built.

- Update to version 3.3.0:
  * See provided NEWS for detailed list of changes

- Update dependencies
- Be more explicit about used backends

Update to version 3.1.0:
  * includes support for PLFS (Jeff Inman, Brett Kettering, LANL)
  * includes support for HDFS (Jeff Inman, LANL)
  * includes support for S3 (Blair Crossman, Brett Kettering, LANL)
  * option to use incompressible data transfers (Blair Crossman, LANL)
  * code cleanup and general usability improvements (Rob Latham, ANL)

- Update mpi dependencies

- Initial package for version 3.0.1