Added templates for the XML ouptut's prologue and epilogue, for MARCXML, NLM, and RSS.  (DC uses default sanity prologue/epilogue.)
Added templates for the XML ouptut's prologue and epilogue, for
MARCXML, NLM, and RSS.  (DC uses default sanity prologue/epilogue.)

inveniosoftware/invenio,tiborsimko/invenio,inveniosoftware/invenio,tiborsimko/invenio