hdf5_ep

[svn-r6514] Purpose:
    Bug fix and Update

Description:
    From Quincey's comments on the code I checked in last night:

        - In H5F_close call, the "private" processes should call the
          H5F_flush with the "CLEAR_ONLY" flag.
        - There's no need for a special case for FPHDF5 in the
          FD_real_alloc function since FPHDF5 doesn't define an alloc
          function.
        - The return type of H5Pset_fapl_fphdf5 should be herr_t instead
          of hid_t. I don't know how it got that way in the first place.
        - The variable names for MPI types and the structure typedefs
          should be switched: H5FP_request/H5FP_request_t to
          H5FP_request_t/H5FP_request and so on.
        - In the H5FP.c module, I was commiting the H5FP_request MPI
          datatype but using the wrong offset field...

Platforms tested:
    Linux...will test on others, but these are mostly FPHDF5 changes.

Misc. update: