XSLTs for transformation of MARC XML

These are the XSLTs used to transform the initial MARC XML from the
internet archive into our locally extended Dublin Core for ingest into
MIRA.  It consists of the main XSLT 'InternetArchiveBatch_20140327.xsl'
and two templates for normalizing the MARC 'MARC_helper.xslt' and
creating filenames 'filename.xslt'