hdf5_msb

[svn-r17760] Purpose: Fix problem with H5TB API

Description:
The H5TB API makes some improper assumptions about the order of compound
datatype members.  Namely, it assumes that members remain in the order in which
they were inserted.  Unfortunately, this assumption is inherent in the design of
the interface.  The library has been patched so that this assumption holds in
situations relevant to H5TB.

Tested: jam, linew, amani (h5committest)