hdf5_ep

[svn-r6115] Purpose:
    Code Cleanup & New Tests

Description:
    tmisc.c:
        Switched from using H5_HAVE_COMPRESSION flag in favor of
        H5_HAVE_FILTER_DEFLATE.

    dsets.c:
        Switched from using H5_HAVE_COMPRESSION flag in favor of
        H5_HAVE_FILTER_DEFLATE.

        Refactored I/O filter tests to allow new filters to be [more] easily
        added.

        Added tests for shuffle & deflate+shuffle I/O filters (if the filter(s)
        are enabled).

        Added test for creating a new dataset with a filter that is not
        available.

        Added test for attempting to read a dataset created with a filter that
        is not available.

Platforms tested:
    Tested h5committest {arabica (fortran), eirene (fortran, C++)
        modi4 (parallel, fortran)}
    FreeBSD 4.7 (sleipnir)