[libxml2]Add libxml2 library

libxml2/test/relaxng/spec.rng

@@ -0,0 +1,60 @@
+<?xml version="1.0" encoding="iso-8859-1"?>
+<!-- $Id: spec.rng,v 1.3 2001/10/23 05:54:24 jjc Exp $ -->
+<grammar xmlns="http://relaxng.org/ns/structure/1.0"
+         datatypeLibrary="http://www.w3.org/2001/XMLSchema-datatypes"
+          xmlns:p="http://relaxng.org/ns/proofsystem">
+
+<start>
+  <grammar>
+    <include href="docbook.rng"/>
+    <define name="synop.class" combine="choice">
+      <choice>
+        <parentRef name="rngref"/>
+        <parentRef name="grammarref"/>
+        <grammar>
+          <include href="proofsystem.rng"/>
+          <start combine="choice">
+            <ref name="formula"/>
+          </start>
+        </grammar>
+      </choice>
+    </define>
+    <define name="tech.char.class" combine="choice">
+      <parentRef name="terms"/>
+    </define>
+  </grammar>
+</start>
+
+<define name="rngref">
+  <element name="rngref">
+    <attribute name="src">
+      <data type="anyURI"/>
+    </attribute>
+  </element>
+</define>
+
+<define name="grammarref">
+  <element name="grammarref">
+    <attribute name="src">
+      <data type="anyURI"/>
+    </attribute>
+  </element>
+</define>
+
+<define name="terms">
+  <grammar>
+     <include href="proofsystem.rng">
+       <start>
+         <choice>
+           <ref name="expr"/>
+           <ref name="judgement"/>
+           <ref name="context"/>
+         </choice>
+       </start>
+     </include>
+  </grammar>
+</define>
+
+</grammar>
+
+