hdf5_msb

[svn-r12504] 
bug fix

calling h5tools_get_fapl running the mpio driver caused H5FD_pl_copy to
fail silently in some conditions. a MPI call was made before MPI_Init.

solution: corrected the MPI call to be made after MPI_Init and added error return
conditions to H5FD_pl_copy and h5tools_get_fapl

tested on copper parallel, mir, shanti