This commit attempts to update the romio io component to not use
functions removed in MPI-3.0 (2012). This is a first cut and will
probably need to be reviewed for correctness.
Signed-off-by: Nathan Hjelm <hjelmn@lanl.gov>
(back-ported from commit open-mpi/ompi@84765001aa)
Signed-off-by: Gilles Gouaillardet <gilles@rist.or.jp>
