Fix broken Z39.50 import due to XMLENT manipulating <script> elements

Fix broken Z39.50 import due to XMLENT manipulating <script> elements

Thanks to Jeff Godin <jeff@tcnet.org> for the patch!

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Signed-off-by: Jeff Godin <jeff@tcnet.org>
git-svn-id: svn://svn.open-ils.org/ILS/trunk@12773 dcc99617-32d9-48b4-a31d-7c20da2025e4