hdf5_ep

[svn-r23950] Description:
    There seem to be some objects still left open, so the file was not closed
    properly and caused failure on OpenVMS, because on that platform, more than
    one file cannot be opened at the same time (according to Ray.)

    Added setFcloseDegree(H5F_CLOSE_STRONG) to test_dset() to eliminate the
    failure temporarily, until the opened objects can be located and closed properly.

Platforms tested:
    Linux/32 2.6 (jam) with GNU compilers
    SunOS 5.11 (emu)