hdf5doc

Description:
    H5Pget_filter[12].htm, H5Pget_filter_by_id[12].htm
    H5Pall_filters_avail.htm, H5Pmodify_filter.htm, H5Premove_filter.htm
    H5Pset_deflate.htm, H5Pset_fletcher32.htm
        Add that these functions now work with group creation property lists
            (for fractal heap compression).
        Remove discussions of permanent versus transient filter pipelines
            and change references to 'permanent filter pipeline' to simply 
            'filter pipelines'.  (Transient pipelines are not implemented.) 
            Remove related "Note" sections.
        Update template and HTML coding.
        Add N-bit and scaleoffset filters to filter lists as appropriate.
        In H5Pset_deflate only:
            Correct H5D_COMPRESS_DEFLATE to read H5Z_FILTER_DEFLATE. 
            Add reference to GNU gzip.  
    H5Zregister.htm
        Add note regarding 'can apply' and 'set local' callback functions
        when working with a group creation property list.
    H5Pset_filter.htm
        Add reference to H5Zregister regarding filters and group creation 
            property lists.
Tested:  Firefox