hdf5_chunking_query_bmr

[svn-r2032] Purpose:
    Bug Fix.
Description:
    Tests failed if drivers multi or split is used (split is implemented
    as a special case of multi).  When a file created via those two drivers
    is opened again, the file sizes retrieved are incorrect.  These seemed
    to happen to non-little-endian machines only (sun, sgi failed, but
    linux succeed.)
Solution:
    The error was because the superblock encoding code was keeping track
    in nseen the pairs of HADDR needed to be converted but did not tell the
    H5Tconvert 2*nseen to convert.  Thus only the first half of the addresses
    were converted, the rest were left alone.  Corrected the numbers of
    addresses to convert.
Platforms tested:
    IRIX64, Solaris 2.7, Linux.