hdf5_ep

[svn-r4747] Purpose:
    Bug Fix.
Description:
    The H5Rget_object_type function could not get the object type for dataset
    region references.
Solution:
    Added a new function, H5Rget_obj_type, to replace H5Rget_object_type.
    The new function requires the reference type as an additional parameter,
    in order to allow queries on different reference types to be performed
    correctly.
Platforms tested:
    FreeBSD 4.4. (sleipnir)