hdf5_ep

[svn-r23464] Purpose: 
  HDFFV-8214 - h5repack failed converting small chunked dataset (size < 1K) to contiguous layout.

Description:
  h5repack failed converting small chunked dataset (size < 1K) to contiguous layout.
  The first case was when chunk dim is bigger than the dataset dim (at leat one), h5repack failed with displaying error stacks.
  The other case is when chunk dim is smaller than the dataset dim, h5repack failed to change layout.
  Merged from HDF5 trunk 23407
    
Tested: 
    jam (linux32-LE), koala (linux64-LE), ostrich (linuxppc64-BE), emu (solaris-BE), fred (mac64-LE), Windows (32-LE cmake), cmake (jam)