vchoi_fork

[svn-r978] Purpose: Bug fixes

Problems:
    There were three separate bugs in the h5toh4 converter worked on.
    They were:

    1) When a loop was detected, the H4 file was missing references
    to paths which were available in the H5 file.

    2) When an H4 SDS or Vdata was created from a H5 dataset, the H4
    object was referenced in the root group, instead of the correct
    Vgroup.

    3) The FIRST path taken to an object for the h5toh4 conversion
    could not involve a SOFTLINK.

Solutions:
    The bug fixes were:

    1) All of the associated references to available paths which
    occur in the H5 file, now appear in the H4 file.

    2) After an H4 SDS or Vdata is created from a H5 dataset, the H4
    object is tag/ref'ed in the appropriate Vgroup.

    3) The FIRST path taken to an H5 object for the H5toh4 conversion
    may involve a HARDLINK, a SOFTLINK, or neither.  The same is
    true of any additional paths to the same object.

Platform tested:
    Solaris2.5