hdf5_ep

[svn-r7046] Purpose:
bug fix

Description:
Parallel binary generated in copper could not run without first
setting LIBPATH to some values.  This is because libtool putting
a very restrictive libray path into the generated library.

Solution:
There had been hack in before for the other IBM SP systems
identified by hostname.  Add copper to the list.

Also, narrow down the hostname patter for Nersc Seaborg
machine a little bit.

Platforms tested:
Copper parallel only since that is the only place it failed.

Misc. update: