hdf5

[svn-r14154] Description:
	Finish deprecating last H5G symbol (H5G_obj_t) - yay!

	Lots of misc. library fixes to remove confusion between links and
objects.  The tools could still use another pass, to remove h5trav_type_t type
and make the correct distinction between links & objects.

Tested on:
        FreeBSD/32 6.2 (duty) in debug mode
        FreeBSD/64 6.2 (liberty) w/C++ & FORTRAN, in debug mode
        Linux/32 2.6 (kagiso) w/PGI compilers, w/C++ & FORTRAN, w/threadsafe,
                                in debug mode
        Linux/64 2.6 (smirom) w/default API=1.6.x, w/C++ & FORTRAN,
                                in production mode
        Solaris/32 2.10 (linew) w/deprecated symbols disabled, w/C++ & FORTRAN,
                                w/szip filter, in production mode
        AIX/32 5.3 (copper) w/FORTRAN, w/parallel, in production mode
        Mac OS X/32 10.4.10 (amazon) in debug mode