hdf5_ep

[svn-r15898] Purpose: Bug Fix

Description: Libtool wasn't working on linew because the script was
             not working with the Solaris Bourne shell. Libtool has built-
             in detection to ensure that it uses an appropriate shell,
             but our config/commence.am was hard coding this shell to be
             /bin/sh. Removing this line allows the shell to be picked up
             by configure, thus allowing libtool to use the correct shell
             on linew (bash). This was initially added to correct for a problem
             on an old machine (janus), so shoudn't be needed for machines
             we currently support.

Tested:      full make check install on kagiso and linew, compile only
             on smirom, duty, and liberty.