added xmlByteConsumed() interface updated the benchmark rebuilt the docs

* parserInternals.c xmlIO.c encoding.c include/libxml/parser.h
  include/libxml/xmlIO.h: added xmlByteConsumed() interface
* doc/*: updated the benchmark rebuilt the docs
* python/tests/Makefile.am python/tests/indexes.py: added a
  specific regression test for xmlByteConsumed()
* include/libxml/encoding.h rngparser.c tree.c: small cleanups
Daniel
diff --git a/doc/html/libxml-xmlreader.html b/doc/html/libxml-xmlreader.html
index 1086e53..5f98b1c 100644
--- a/doc/html/libxml-xmlreader.html
+++ b/doc/html/libxml-xmlreader.html
@@ -91,6 +91,7 @@
 <pre class="programlisting">int	<a href="#xmlTextReaderRelaxNGValidate">xmlTextReaderRelaxNGValidate</a>	(<a href="libxml-xmlreader.html#xmlTextReaderPtr">xmlTextReaderPtr</a> reader, <br />					 const char * rng)</pre>
 <pre class="programlisting">void	<a href="#xmlTextReaderSetErrorHandler">xmlTextReaderSetErrorHandler</a>	(<a href="libxml-xmlreader.html#xmlTextReaderPtr">xmlTextReaderPtr</a> reader, <br />					 <a href="libxml-xmlreader.html#xmlTextReaderErrorFunc">xmlTextReaderErrorFunc</a> f, <br />					 void * arg)</pre>
 <pre class="programlisting">int	<a href="#xmlTextReaderSetParserProp">xmlTextReaderSetParserProp</a>	(<a href="libxml-xmlreader.html#xmlTextReaderPtr">xmlTextReaderPtr</a> reader, <br />					 int prop, <br />					 int value)</pre>
+<pre class="programlisting">void	<a href="#xmlTextReaderSetStructuredErrorHandler">xmlTextReaderSetStructuredErrorHandler</a>	(<a href="libxml-xmlreader.html#xmlTextReaderPtr">xmlTextReaderPtr</a> reader, <br />						 <a href="libxml-xmlerror.html#xmlStructuredErrorFunc">xmlStructuredErrorFunc</a> f, <br />						 void * arg)</pre>
 <pre class="programlisting"><a href="libxml-xmlstring.html#xmlChar">xmlChar</a> *	<a href="#xmlTextReaderValue">xmlTextReaderValue</a>	(<a href="libxml-xmlreader.html#xmlTextReaderPtr">xmlTextReaderPtr</a> reader)</pre>
 <pre class="programlisting"><a href="libxml-xmlstring.html#xmlChar">xmlChar</a> *	<a href="#xmlTextReaderXmlLang">xmlTextReaderXmlLang</a>	(<a href="libxml-xmlreader.html#xmlTextReaderPtr">xmlTextReaderPtr</a> reader)</pre>
 <h2>Description</h2>
@@ -273,7 +274,9 @@
 </pre><p>Register a callback function that will be called on error and warnings. If @f is NULL, the default error and warning handlers are restored.</p>
 <div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>reader</tt></i>:</span></td><td>the <a href="libxml-xmlreader.html#xmlTextReaderPtr">xmlTextReaderPtr</a> used</td></tr><tr><td><span class="term"><i><tt>f</tt></i>:</span></td><td>the callback function to call on error and warnings</td></tr><tr><td><span class="term"><i><tt>arg</tt></i>:</span></td><td>a user argument to pass to the callback function</td></tr></tbody></table></div><h3><a name="xmlTextReaderSetParserProp" id="xmlTextReaderSetParserProp"></a>Function: xmlTextReaderSetParserProp</h3><pre class="programlisting">int	xmlTextReaderSetParserProp	(<a href="libxml-xmlreader.html#xmlTextReaderPtr">xmlTextReaderPtr</a> reader, <br />					 int prop, <br />					 int value)<br />
 </pre><p>Change the parser processing behaviour by changing some of its internal properties. Note that some properties can only be changed before any read has been done.</p>
-<div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>reader</tt></i>:</span></td><td>the <a href="libxml-xmlreader.html#xmlTextReaderPtr">xmlTextReaderPtr</a> used</td></tr><tr><td><span class="term"><i><tt>prop</tt></i>:</span></td><td>the <a href="libxml-xmlreader.html#xmlParserProperties">xmlParserProperties</a> to set</td></tr><tr><td><span class="term"><i><tt>value</tt></i>:</span></td><td>usually 0 or 1 to (de)activate it</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>0 if the call was successful, or -1 in case of error</td></tr></tbody></table></div><h3><a name="xmlTextReaderValue" id="xmlTextReaderValue"></a>Function: xmlTextReaderValue</h3><pre class="programlisting"><a href="libxml-xmlstring.html#xmlChar">xmlChar</a> *	xmlTextReaderValue	(<a href="libxml-xmlreader.html#xmlTextReaderPtr">xmlTextReaderPtr</a> reader)<br />
+<div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>reader</tt></i>:</span></td><td>the <a href="libxml-xmlreader.html#xmlTextReaderPtr">xmlTextReaderPtr</a> used</td></tr><tr><td><span class="term"><i><tt>prop</tt></i>:</span></td><td>the <a href="libxml-xmlreader.html#xmlParserProperties">xmlParserProperties</a> to set</td></tr><tr><td><span class="term"><i><tt>value</tt></i>:</span></td><td>usually 0 or 1 to (de)activate it</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>0 if the call was successful, or -1 in case of error</td></tr></tbody></table></div><h3><a name="xmlTextReaderSetStructuredErrorHandler" id="xmlTextReaderSetStructuredErrorHandler"></a>Function: xmlTextReaderSetStructuredErrorHandler</h3><pre class="programlisting">void	xmlTextReaderSetStructuredErrorHandler	(<a href="libxml-xmlreader.html#xmlTextReaderPtr">xmlTextReaderPtr</a> reader, <br />						 <a href="libxml-xmlerror.html#xmlStructuredErrorFunc">xmlStructuredErrorFunc</a> f, <br />						 void * arg)<br />
+</pre><p>Register a callback function that will be called on error and warnings. If @f is NULL, the default error and warning handlers are restored.</p>
+<div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>reader</tt></i>:</span></td><td>the <a href="libxml-xmlreader.html#xmlTextReaderPtr">xmlTextReaderPtr</a> used</td></tr><tr><td><span class="term"><i><tt>f</tt></i>:</span></td><td>the callback function to call on error and warnings</td></tr><tr><td><span class="term"><i><tt>arg</tt></i>:</span></td><td>a user argument to pass to the callback function</td></tr></tbody></table></div><h3><a name="xmlTextReaderValue" id="xmlTextReaderValue"></a>Function: xmlTextReaderValue</h3><pre class="programlisting"><a href="libxml-xmlstring.html#xmlChar">xmlChar</a> *	xmlTextReaderValue	(<a href="libxml-xmlreader.html#xmlTextReaderPtr">xmlTextReaderPtr</a> reader)<br />
 </pre><p>Provides the text value of the node if present</p>
 <div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>reader</tt></i>:</span></td><td>the <a href="libxml-xmlreader.html#xmlTextReaderPtr">xmlTextReaderPtr</a> used</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the string or NULL if not available. The result must be deallocated with xmlFree()</td></tr></tbody></table></div><h3><a name="xmlTextReaderXmlLang" id="xmlTextReaderXmlLang"></a>Function: xmlTextReaderXmlLang</h3><pre class="programlisting"><a href="libxml-xmlstring.html#xmlChar">xmlChar</a> *	xmlTextReaderXmlLang	(<a href="libxml-xmlreader.html#xmlTextReaderPtr">xmlTextReaderPtr</a> reader)<br />
 </pre><p>The xml:lang scope within which the node resides.</p>