hdf5_ep

[svn-r6872] Purpose:
Improvement, IMO.

Description:
The parallel tests were run after all tools tests.  For some parallel
systems, that could be a long time. Since tools are better tested
in serial mode and one would like to see the results of parallel
tests sooner in parallel mode, I moved the parallel tests before
the tools tests.

Platforms tested:
Only tested in Eirene, both serial and parallel modes.
No need for three platforms test since this is just a simple
Makefile change.