a lot of performance work especially the speed of streaming through the

* globals.c libxml.h parser.c parserInternals.c tree.c xmllint.c
  xmlreader.c include/libxml/parser.h: a lot of performance work
  especially the speed of streaming through the reader and push
  interface. Some thread related optimizations. Nearly doubled the
  speed of parsing through the reader.
Daniel

parserInternals.c

@@ -1051,8 +1051,10 @@ xmlParserInputShrink(xmlParserInputPtr in) {
      * Do not shrink on large buffers whose only a tiny fraction
      * was consumed
      */
+#if 0
     if ((int) in->buf->buffer->use > used + 2 * INPUT_CHUNK)
 	return;
+#endif
     if (used > INPUT_CHUNK) {
 	ret = xmlBufferShrink(in->buf->buffer, used - LINE_LEN);
 	if (ret > 0) {