[libxml2]Add libxml2 library

libxml2/result/ent12.sax

@@ -0,0 +1,21 @@
+SAX.setDocumentLocator()
+SAX.startDocument()
+SAX.internalSubset(root, , )
+SAX.entityDecl(foo, 1, (null), (null), abc)
+SAX.getEntity(foo)
+SAX.entityDecl(bar, 1, (null), (null), def)
+SAX.getEntity(bar)
+SAX.externalSubset(root, , )
+SAX.getEntity(foo)
+SAX.startElement(root, attribute='&foo;')
+SAX.characters(
+   , 4)
+SAX.startElement(element)
+SAX.getEntity(bar)
+SAX.characters(def, 3)
+SAX.reference(bar)
+SAX.endElement(element)
+SAX.characters(
+, 1)
+SAX.endElement(root)
+SAX.endDocument()