hdf5doc

Purpose:
    Added H5Pset/get_data_transform
        These are initial entries; they need technical review.
    Removed several deprecated functions that have been commented out
        through several release cycles (H5Pget_deflate and
        H5Pset/get_compression) and several lines of no-longer-used
        template code.
    Minor formatting changes.

Platforms tested:
    Mozilla