hdf5_ep

[svn-r6854] Purpose:
Feature

Description:
Sometimes the total build process take a long time, especially in
parallel systems.  Need some idea if some times are taking way
too long to process.

Solution:
Added timestamps marking the beginning and ending of tests in
one directory.  This gives a rough idea of how much time the
tests use.

Platforms tested:
Tested only in Eirene since this is just a makefile thing and only
involve a simple command like echo and date.

Misc. update: