hdf5_ep

[svn-r6525] Purpose:
New test feature

Description:
Added the VFD_LIST definition to support the "make check-vfd" tests.

Platforms tested:
h5committested.
Since check-vfd is not invoked by default, I went to each machine
to invoke them by hand.  The target worked fine but there were
errors reported from those driver tests.  (Those errors were beyond
the scope of this make target test.)

Misc. update: