hdf5_chunking_query_bmr

[svn-r351] Removed the access_mode argument from H5Pset_mpi which was later
used to open an HDF5 file with MPIO access.  The design has changed
to provide access-mode controll (independent or collective access)
as an argument in the H5D read/write calls.

Also removed the macros H5FACC_INDEPENDENT and H5FACC_COLLECTIVE.
The original thinking was to define how a file is independent or
collective access.  They are replaced by the enum H5D_transfer_t
with values of H5D_XFER_INDEPENDENT and H5D_XFER_COLLECTIVE.
These values are used in the H5Pset_xfer to setup a data transfer
property list to be used during the H5D read/write calls.

The original access_mode field in the File access structure is
still there.  It would be removed soon once the transfer control
can be passed down to the low level I/O routines.