Add missing xsd

oaipmh-core/src/main/resources/include/simpledc20021212.xsd

+<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
+           xmlns="http://purl.org/dc/elements/1.1/"
+           targetNamespace="http://purl.org/dc/elements/1.1/"
+           elementFormDefault="qualified"
+           attributeFormDefault="unqualified">
+
+  <xs:annotation>
+    <xs:documentation xml:lang="en">
+      Simple DC XML Schema, 2002-10-09
+      by Pete Johnston (p.johnston@ukoln.ac.uk),
+      Carl Lagoze (lagoze@cs.cornell.edu), Andy Powell (a.powell@ukoln.ac.uk),
+      Herbert Van de Sompel (hvdsomp@yahoo.com).
+      This schema defines terms for Simple Dublin Core, i.e. the 15
+      elements from the http://purl.org/dc/elements/1.1/ namespace, with
+      no use of encoding schemes or element refinements.
+      Default content type for all elements is xs:string with xml:lang
+      attribute available.
+
+      Supercedes version of 2002-03-12. 
+      Amended to remove namespace declaration for http://www.w3.org/XML/1998/namespace namespace,
+      and to reference lang attribute via built-in xml: namespace prefix.
+      xs:appinfo also removed.
+    </xs:documentation>
+  </xs:annotation>
+
+  <xs:import namespace="http://www.w3.org/XML/1998/namespace"
+             schemaLocation="http://www.w3.org/2001/03/xml.xsd">
+  </xs:import>
+
+  <xs:element name="title" type="elementType"/>
+  <xs:element name="creator" type="elementType"/>
+  <xs:element name="subject" type="elementType"/>
+  <xs:element name="description" type="elementType"/>
+  <xs:element name="publisher" type="elementType"/>
+  <xs:element name="contributor" type="elementType"/>
+  <xs:element name="date" type="elementType"/>
+  <xs:element name="type" type="elementType"/>
+  <xs:element name="format" type="elementType"/>
+  <xs:element name="identifier" type="elementType"/>
+  <xs:element name="source" type="elementType"/>
+  <xs:element name="language" type="elementType"/>
+  <xs:element name="relation" type="elementType"/>
+  <xs:element name="coverage" type="elementType"/>
+  <xs:element name="rights" type="elementType"/>
+
+  <xs:group name="elementsGroup">
+  <xs:sequence>
+    <xs:choice minOccurs="0" maxOccurs="unbounded">
+      <xs:element ref="title"/>
+      <xs:element ref="creator"/>
+      <xs:element ref="subject"/>
+      <xs:element ref="description"/>
+      <xs:element ref="publisher"/>
+      <xs:element ref="contributor"/>
+      <xs:element ref="date"/>
+      <xs:element ref="type"/>
+      <xs:element ref="format"/>
+      <xs:element ref="identifier"/>
+      <xs:element ref="source"/>
+      <xs:element ref="language"/>
+      <xs:element ref="relation"/>
+      <xs:element ref="coverage"/>
+      <xs:element ref="rights"/>
+    </xs:choice>
+    </xs:sequence>
+  </xs:group>
+
+  <xs:complexType name="elementType">
+    <xs:simpleContent>
+      <xs:extension base="xs:string">
+        <xs:attribute ref="xml:lang" use="optional"/>
+      </xs:extension>
+    </xs:simpleContent>
+  </xs:complexType>
+
+</xs:schema>
+
+