OAI: passage des prologues xml en chaines php

application/modules/opac/views/scripts/oai/identify.xml.phtml

-<?xml version="1.0" encoding="UTF-8"?>
+<?php echo '<?xml version="1.0" encoding="UTF-8"?>';?>
 <OAI-PMH xmlns="http://www.openarchives.org/OAI/2.0/"
 				 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 				 xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/ http://www.openarchives.org/OAI/2.0/OAI-PMH.xsd">

application/modules/opac/views/scripts/oai/list-identifiers.xml.phtml

-<?php echo '<?xml version="1.0" ?>';?>
+<?php echo '<?xml version="1.0" encoding="UTF-8"?>';?>
 <OAI-PMH xmlns="http://www.openarchives.org/OAI/2.0/"
 	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 	xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/ http://www.openarchives.org/OAI/2.0/OAI-PMH.xsd">

application/modules/opac/views/scripts/oai/list-metadata-formats.xml.phtml

-<?xml version="1.0" encoding="UTF-8"?>
+<?php echo '<?xml version="1.0" encoding="UTF-8"?>';?>
 <OAI-PMH xmlns="http://www.openarchives.org/OAI/2.0/"
 				 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 				 xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/ http://www.openarchives.org/OAI/2.0/OAI-PMH.xsd">

application/modules/opac/views/scripts/oai/list-records.xml.phtml

-<?xml version="1.0" encoding="UTF-8"?>
+<?php echo '<?xml version="1.0" encoding="UTF-8"?>';?>
 <OAI-PMH xmlns="http://www.openarchives.org/OAI/2.0/"
 				 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 				 xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/ http://www.openarchives.org/OAI/2.0/OAI-PMH.xsd">

application/modules/opac/views/scripts/oai/list-sets.xml.phtml

-<?xml version="1.0" encoding="UTF-8"?>
+<?php echo '<?xml version="1.0" encoding="UTF-8"?>';?>
 <OAI-PMH xmlns="http://www.openarchives.org/OAI/2.0/"
 				 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 				 xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/ http://www.openarchives.org/OAI/2.0/OAI-PMH.xsd">