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
it uses the API function H5Gcopy to copy groups and datasets from file
to file, read from a command line
note: the test script is not finished yet
tested on heping, copper, shanti
