h4h5tools

Purpose:
    Enhancement and bug fix
Description:
    If user didn't have hdp in the path, test in the h5toh4 directory would fail.

    Bug (kind of...:-) Even when correct hdp was found, the error message
    about the wrong version of hdp was printed and tests for the files
    with the loops were skipped. That happened because we think that user
    always uses released version of the library that doesn't have for example,
    "Post..." substring in the version string.

Solution:
    Since we know which h4cc is used, we can extract the correct path from the
    the CC environment variable and use it to point to the correct hdp (done by Brad)

    Modified library version tests to accept all versions after 4r2.0 as the ones
    that can handle loops (e.g. current Release 2 Post0 will work)

Platforms tested: arabica