hdf5_chunking_query_bmr

[svn-r3138] Purpose:
    Bug Fix
Description:
    More descrimination is necessary for the type of background buffer needed.
    Compound types need H5T_BKG_TEMP and vlen & array types need H5T_BKG_YES.
Solution:
    Make the internal routine be more specific about the background type set.
Platforms tested:
    FreeBSD 4.2 (hawkwind)