- added the patch from Carl Nygard <cnygard@bellatlantic.net>

which allow impressive speed improvement on dataset with large text
   pieces, but at the cost of broken binary compatibility and slightly
   bigger memory usage.  Configure with --with-buffers to activate them,
   they are protected with XML_USE_BUFFER_CONTENT define.
 - added xmlCleanupPredefinedEntities(), memory allocation cleanup
Daniel

debugXML.c

@@ -179,7 +179,11 @@ void xmlDebugDumpOneNode(FILE *output, xmlNodePtr node, int depth) {
 	if (node->content != NULL) {
 	    fprintf(output, shift);
 	    fprintf(output, "content=");
+#ifndef XML_USE_BUFFER_CONTENT	    
 	    xmlDebugDumpString(output, node->content);
+#else
+	    xmlDebugDumpString(output, xmlBufferContent(node->content));
+#endif
 	    fprintf(output, "\n");
 	}
     } else {