vchoi_fork

[svn-r2680] Purpose:
    Bug fix (ID 419)
Description:
    Converted strings class types (in dataset and attributes) to
    HDF4 type of DFNT_INT8.  Should have been DFNT_CHAR type.
Solution:
h5toh4.c:
    Changed the HDF4 type from DFNT_INT8 to DFNT_CHAR type.
    Converted all hdf5 strings (be it NULLTERM, NULLPAD, SPACEPAD)
    all to fixed width space padded HDF4 DFNT_CHAR.
testh5toh4:
    Added the testing of $HDF_NOCLEANUP before cleaning away the result files.
testfiles/Expected/tattr.hdf:
testfiles/Expected/tstr.hdf:
testfiles/Expected/tstr2.hdf:
    Updated with the corrected DFNT_CHAR type.
Platforms tested:
    Solaris 2.7, Linux, Irix 6.5.