moved string and UTF8 routines out of parser.c and encoding.c into a new

* encoding.c, parser.c, xmlstring.c, Makefile.am,
  include/libxml/Makefile.am, include/libxml/catalog.c,
  include/libxml/chvalid.h, include/libxml/encoding.h,
  include/libxml/parser.h, include/libxml/relaxng.h,
  include/libxml/tree.h, include/libxml/xmlwriter.h,
  include/libxml/xmlstring.h:
  moved string and UTF8 routines out of parser.c and encoding.c
  into a new module xmlstring.c with include file
  include/libxml/xmlstring.h mostly using patches from Reid
  Spencer.  Since xmlChar now defined in xmlstring.h, several
  include files needed to have a #include added for safety.
* doc/apibuild.py: added some additional sorting for various
  references displayed in the APIxxx.html files.  Rebuilt the
  docs, and also added new file for xmlstring module.
* configure.in: small addition to help my testing; no effect on
  normal usage.
* doc/search.php: added $_GET[query] so that persistent globals
  can be disabled (for recent versions of PHP)
diff --git a/doc/html/libxml-xpath.html b/doc/html/libxml-xpath.html
index 355f022..2afd717 100644
--- a/doc/html/libxml-xpath.html
+++ b/doc/html/libxml-xpath.html
@@ -35,21 +35,21 @@
 <a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a>	<a href="#xmlXPathAxisFunc">xmlXPathAxisFunc</a>	(<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br />						 <a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> cur)
 </pre>
 <pre class="programlisting">double	<a href="#xmlXPathCastBooleanToNumber">xmlXPathCastBooleanToNumber</a>	(int val)</pre>
-<pre class="programlisting"><a href="libxml-tree.html#xmlChar">xmlChar</a> *	<a href="#xmlXPathCastBooleanToString">xmlXPathCastBooleanToString</a>	(int val)</pre>
+<pre class="programlisting"><a href="libxml-xmlstring.html#xmlChar">xmlChar</a> *	<a href="#xmlXPathCastBooleanToString">xmlXPathCastBooleanToString</a>	(int val)</pre>
 <pre class="programlisting">int	<a href="#xmlXPathCastNodeSetToBoolean">xmlXPathCastNodeSetToBoolean</a>	(<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> ns)</pre>
 <pre class="programlisting">double	<a href="#xmlXPathCastNodeSetToNumber">xmlXPathCastNodeSetToNumber</a>	(<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> ns)</pre>
-<pre class="programlisting"><a href="libxml-tree.html#xmlChar">xmlChar</a> *	<a href="#xmlXPathCastNodeSetToString">xmlXPathCastNodeSetToString</a>	(<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> ns)</pre>
+<pre class="programlisting"><a href="libxml-xmlstring.html#xmlChar">xmlChar</a> *	<a href="#xmlXPathCastNodeSetToString">xmlXPathCastNodeSetToString</a>	(<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> ns)</pre>
 <pre class="programlisting">double	<a href="#xmlXPathCastNodeToNumber">xmlXPathCastNodeToNumber</a>	(<a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> node)</pre>
-<pre class="programlisting"><a href="libxml-tree.html#xmlChar">xmlChar</a> *	<a href="#xmlXPathCastNodeToString">xmlXPathCastNodeToString</a>	(<a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> node)</pre>
+<pre class="programlisting"><a href="libxml-xmlstring.html#xmlChar">xmlChar</a> *	<a href="#xmlXPathCastNodeToString">xmlXPathCastNodeToString</a>	(<a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> node)</pre>
 <pre class="programlisting">int	<a href="#xmlXPathCastNumberToBoolean">xmlXPathCastNumberToBoolean</a>	(double val)</pre>
-<pre class="programlisting"><a href="libxml-tree.html#xmlChar">xmlChar</a> *	<a href="#xmlXPathCastNumberToString">xmlXPathCastNumberToString</a>	(double val)</pre>
-<pre class="programlisting">int	<a href="#xmlXPathCastStringToBoolean">xmlXPathCastStringToBoolean</a>	(const <a href="libxml-tree.html#xmlChar">xmlChar</a> * val)</pre>
-<pre class="programlisting">double	<a href="#xmlXPathCastStringToNumber">xmlXPathCastStringToNumber</a>	(const <a href="libxml-tree.html#xmlChar">xmlChar</a> * val)</pre>
+<pre class="programlisting"><a href="libxml-xmlstring.html#xmlChar">xmlChar</a> *	<a href="#xmlXPathCastNumberToString">xmlXPathCastNumberToString</a>	(double val)</pre>
+<pre class="programlisting">int	<a href="#xmlXPathCastStringToBoolean">xmlXPathCastStringToBoolean</a>	(const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * val)</pre>
+<pre class="programlisting">double	<a href="#xmlXPathCastStringToNumber">xmlXPathCastStringToNumber</a>	(const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * val)</pre>
 <pre class="programlisting">int	<a href="#xmlXPathCastToBoolean">xmlXPathCastToBoolean</a>		(<a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> val)</pre>
 <pre class="programlisting">double	<a href="#xmlXPathCastToNumber">xmlXPathCastToNumber</a>		(<a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> val)</pre>
-<pre class="programlisting"><a href="libxml-tree.html#xmlChar">xmlChar</a> *	<a href="#xmlXPathCastToString">xmlXPathCastToString</a>	(<a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> val)</pre>
+<pre class="programlisting"><a href="libxml-xmlstring.html#xmlChar">xmlChar</a> *	<a href="#xmlXPathCastToString">xmlXPathCastToString</a>	(<a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> val)</pre>
 <pre class="programlisting">int	<a href="#xmlXPathCmpNodes">xmlXPathCmpNodes</a>		(<a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> node1, <br />					 <a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> node2)</pre>
-<pre class="programlisting"><a href="libxml-xpath.html#xmlXPathCompExprPtr">xmlXPathCompExprPtr</a>	<a href="#xmlXPathCompile">xmlXPathCompile</a>	(const <a href="libxml-tree.html#xmlChar">xmlChar</a> * str)</pre>
+<pre class="programlisting"><a href="libxml-xpath.html#xmlXPathCompExprPtr">xmlXPathCompExprPtr</a>	<a href="#xmlXPathCompile">xmlXPathCompile</a>	(const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * str)</pre>
 <pre class="programlisting"><a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a>	<a href="#xmlXPathCompiledEval">xmlXPathCompiledEval</a>	(<a href="libxml-xpath.html#xmlXPathCompExprPtr">xmlXPathCompExprPtr</a> comp, <br />						 <a href="libxml-xpath.html#xmlXPathContextPtr">xmlXPathContextPtr</a> ctx)</pre>
 <pre class="programlisting"><a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a>	<a href="#xmlXPathConvertBoolean">xmlXPathConvertBoolean</a>	(<a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> val)</pre>
 <pre class="programlisting">Function type: <a href="#xmlXPathConvertFunc">xmlXPathConvertFunc</a>
@@ -57,8 +57,8 @@
 </pre>
 <pre class="programlisting"><a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a>	<a href="#xmlXPathConvertNumber">xmlXPathConvertNumber</a>	(<a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> val)</pre>
 <pre class="programlisting"><a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a>	<a href="#xmlXPathConvertString">xmlXPathConvertString</a>	(<a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> val)</pre>
-<pre class="programlisting"><a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a>	<a href="#xmlXPathEval">xmlXPathEval</a>	(const <a href="libxml-tree.html#xmlChar">xmlChar</a> * str, <br />					 <a href="libxml-xpath.html#xmlXPathContextPtr">xmlXPathContextPtr</a> ctx)</pre>
-<pre class="programlisting"><a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a>	<a href="#xmlXPathEvalExpression">xmlXPathEvalExpression</a>	(const <a href="libxml-tree.html#xmlChar">xmlChar</a> * str, <br />						 <a href="libxml-xpath.html#xmlXPathContextPtr">xmlXPathContextPtr</a> ctxt)</pre>
+<pre class="programlisting"><a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a>	<a href="#xmlXPathEval">xmlXPathEval</a>	(const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * str, <br />					 <a href="libxml-xpath.html#xmlXPathContextPtr">xmlXPathContextPtr</a> ctx)</pre>
+<pre class="programlisting"><a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a>	<a href="#xmlXPathEvalExpression">xmlXPathEvalExpression</a>	(const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * str, <br />						 <a href="libxml-xpath.html#xmlXPathContextPtr">xmlXPathContextPtr</a> ctxt)</pre>
 <pre class="programlisting">Function type: <a href="#xmlXPathEvalFunc">xmlXPathEvalFunc</a>
 void	<a href="#xmlXPathEvalFunc">xmlXPathEvalFunc</a>		(<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br />					 int nargs)
 </pre>
@@ -87,7 +87,7 @@
     int	nodeMax	: size of the array as allocated
     <a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> *	nodeTab	: array of nodes in no particular order @
 }</pre><h3><a name="xmlXPathAxis" id="xmlXPathAxis">Structure xmlXPathAxis</a></h3><pre class="programlisting">Structure xmlXPathAxis<br />struct _xmlXPathAxis {
-    const <a href="libxml-tree.html#xmlChar">xmlChar</a> *	name	: the axis name
+    const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> *	name	: the axis name
     <a href="libxml-xpath.html#xmlXPathAxisFunc">xmlXPathAxisFunc</a>	func	: the search function
 }</pre><h3><a name="xmlXPathCompExpr" id="xmlXPathCompExpr">Structure xmlXPathCompExpr</a></h3><pre class="programlisting">Structure xmlXPathCompExpr<br />struct _xmlXPathCompExpr {
 The content of this structure is not made public by the API.
@@ -118,8 +118,8 @@
     void *	varLookupFunc	: variable lookup func
     void *	varLookupData	: variable lookup data Possibility to lin
     void *	extra	: needed for XSLT The function name and U
-    const <a href="libxml-tree.html#xmlChar">xmlChar</a> *	function
-    const <a href="libxml-tree.html#xmlChar">xmlChar</a> *	functionURI	: function lookup function and data
+    const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> *	function
+    const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> *	functionURI	: function lookup function and data
     void *	funcLookupFunc	: function lookup func
     void *	funcLookupData	: function lookup data temporary namespac
     <a href="libxml-tree.html#xmlNsPtr">xmlNsPtr</a> *	tmpNsList	: Array of namespaces
@@ -153,14 +153,14 @@
     <a name="XPATH_INVALID_CHAR_ERROR" id="XPATH_INVALID_CHAR_ERROR">XPATH_INVALID_CHAR_ERROR</a> = 21
 }
 </pre><h3><a name="xmlXPathFunct" id="xmlXPathFunct">Structure xmlXPathFunct</a></h3><pre class="programlisting">Structure xmlXPathFunct<br />struct _xmlXPathFunct {
-    const <a href="libxml-tree.html#xmlChar">xmlChar</a> *	name	: the function name
+    const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> *	name	: the function name
     <a href="libxml-xpath.html#xmlXPathEvalFunc">xmlXPathEvalFunc</a>	func	: the evaluation function
 }</pre><h3><a name="xmlXPathObject" id="xmlXPathObject">Structure xmlXPathObject</a></h3><pre class="programlisting">Structure xmlXPathObject<br />struct _xmlXPathObject {
     <a href="libxml-xpath.html#xmlXPathObjectType">xmlXPathObjectType</a>	type
     <a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a>	nodesetval
     int	boolval
     double	floatval
-    <a href="libxml-tree.html#xmlChar">xmlChar</a> *	stringval
+    <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> *	stringval
     void *	user
     int	index
     void *	user2
@@ -178,8 +178,8 @@
     <a name="XPATH_XSLT_TREE" id="XPATH_XSLT_TREE">XPATH_XSLT_TREE</a> = 9 : An XSLT value tree, non modifiable
 }
 </pre><h3><a name="xmlXPathParserContext" id="xmlXPathParserContext">Structure xmlXPathParserContext</a></h3><pre class="programlisting">Structure xmlXPathParserContext<br />struct _xmlXPathParserContext {
-    const <a href="libxml-tree.html#xmlChar">xmlChar</a> *	cur	: the current char being parsed
-    const <a href="libxml-tree.html#xmlChar">xmlChar</a> *	base	: the full expression
+    const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> *	cur	: the current char being parsed
+    const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> *	base	: the full expression
     int	error	: error code
     <a href="libxml-xpath.html#xmlXPathContextPtr">xmlXPathContextPtr</a>	context	: the evaluation context
     <a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a>	value	: the current value
@@ -190,45 +190,45 @@
     int	xptr	: it this an XPointer expression
     <a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a>	ancestor	: used for walking preceding axis
 }</pre><h3><a name="xmlXPathType" id="xmlXPathType">Structure xmlXPathType</a></h3><pre class="programlisting">Structure xmlXPathType<br />struct _xmlXPathType {
-    const <a href="libxml-tree.html#xmlChar">xmlChar</a> *	name	: the type name
+    const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> *	name	: the type name
     <a href="libxml-xpath.html#xmlXPathConvertFunc">xmlXPathConvertFunc</a>	func	: the conversion function
 }</pre><h3><a name="xmlXPathVariable" id="xmlXPathVariable">Structure xmlXPathVariable</a></h3><pre class="programlisting">Structure xmlXPathVariable<br />struct _xmlXPathVariable {
-    const <a href="libxml-tree.html#xmlChar">xmlChar</a> *	name	: the variable name
+    const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> *	name	: the variable name
     <a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a>	value	: the value
 }</pre><h3><a name="xmlXPathAxisFunc" id="xmlXPathAxisFunc"></a>Function type: xmlXPathAxisFunc</h3><pre class="programlisting">Function type: xmlXPathAxisFunc
 <a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a>	xmlXPathAxisFunc	(<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br />						 <a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> cur)
 </pre><p>An axis traversal function. To traverse an axis, the engine calls the first time with cur == NULL and repeat until the function returns NULL indicating the end of the axis traversal.</p><div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>ctxt</tt></i>:</span></td><td>the XPath interpreter context</td></tr><tr><td><span class="term"><i><tt>cur</tt></i>:</span></td><td>the previous node being explored on that axis</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the next node in that axis or NULL if at the end of the axis.</td></tr></tbody></table></div><br />
 <h3><a name="xmlXPathCastBooleanToNumber" id="xmlXPathCastBooleanToNumber"></a>Function: xmlXPathCastBooleanToNumber</h3><pre class="programlisting">double	xmlXPathCastBooleanToNumber	(int val)<br />
 </pre><p>Converts a boolean to its number value</p>
-<div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>val</tt></i>:</span></td><td>a boolean</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the number value</td></tr></tbody></table></div><h3><a name="xmlXPathCastBooleanToString" id="xmlXPathCastBooleanToString"></a>Function: xmlXPathCastBooleanToString</h3><pre class="programlisting"><a href="libxml-tree.html#xmlChar">xmlChar</a> *	xmlXPathCastBooleanToString	(int val)<br />
+<div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>val</tt></i>:</span></td><td>a boolean</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the number value</td></tr></tbody></table></div><h3><a name="xmlXPathCastBooleanToString" id="xmlXPathCastBooleanToString"></a>Function: xmlXPathCastBooleanToString</h3><pre class="programlisting"><a href="libxml-xmlstring.html#xmlChar">xmlChar</a> *	xmlXPathCastBooleanToString	(int val)<br />
 </pre><p>Converts a boolean to its string value.</p>
 <div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>val</tt></i>:</span></td><td>a boolean</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>a newly allocated string.</td></tr></tbody></table></div><h3><a name="xmlXPathCastNodeSetToBoolean" id="xmlXPathCastNodeSetToBoolean"></a>Function: xmlXPathCastNodeSetToBoolean</h3><pre class="programlisting">int	xmlXPathCastNodeSetToBoolean	(<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> ns)<br />
 </pre><p>Converts a node-set to its boolean value</p>
 <div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>ns</tt></i>:</span></td><td>a node-set</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the boolean value</td></tr></tbody></table></div><h3><a name="xmlXPathCastNodeSetToNumber" id="xmlXPathCastNodeSetToNumber"></a>Function: xmlXPathCastNodeSetToNumber</h3><pre class="programlisting">double	xmlXPathCastNodeSetToNumber	(<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> ns)<br />
 </pre><p>Converts a node-set to its number value</p>
-<div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>ns</tt></i>:</span></td><td>a node-set</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the number value</td></tr></tbody></table></div><h3><a name="xmlXPathCastNodeSetToString" id="xmlXPathCastNodeSetToString"></a>Function: xmlXPathCastNodeSetToString</h3><pre class="programlisting"><a href="libxml-tree.html#xmlChar">xmlChar</a> *	xmlXPathCastNodeSetToString	(<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> ns)<br />
+<div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>ns</tt></i>:</span></td><td>a node-set</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the number value</td></tr></tbody></table></div><h3><a name="xmlXPathCastNodeSetToString" id="xmlXPathCastNodeSetToString"></a>Function: xmlXPathCastNodeSetToString</h3><pre class="programlisting"><a href="libxml-xmlstring.html#xmlChar">xmlChar</a> *	xmlXPathCastNodeSetToString	(<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> ns)<br />
 </pre><p>Converts a node-set to its string value.</p>
 <div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>ns</tt></i>:</span></td><td>a node-set</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>a newly allocated string.</td></tr></tbody></table></div><h3><a name="xmlXPathCastNodeToNumber" id="xmlXPathCastNodeToNumber"></a>Function: xmlXPathCastNodeToNumber</h3><pre class="programlisting">double	xmlXPathCastNodeToNumber	(<a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> node)<br />
 </pre><p>Converts a node to its number value</p>
-<div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>node</tt></i>:</span></td><td>a node</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the number value</td></tr></tbody></table></div><h3><a name="xmlXPathCastNodeToString" id="xmlXPathCastNodeToString"></a>Function: xmlXPathCastNodeToString</h3><pre class="programlisting"><a href="libxml-tree.html#xmlChar">xmlChar</a> *	xmlXPathCastNodeToString	(<a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> node)<br />
+<div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>node</tt></i>:</span></td><td>a node</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the number value</td></tr></tbody></table></div><h3><a name="xmlXPathCastNodeToString" id="xmlXPathCastNodeToString"></a>Function: xmlXPathCastNodeToString</h3><pre class="programlisting"><a href="libxml-xmlstring.html#xmlChar">xmlChar</a> *	xmlXPathCastNodeToString	(<a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> node)<br />
 </pre><p>Converts a node to its string value.</p>
 <div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>node</tt></i>:</span></td><td>a node</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>a newly allocated string.</td></tr></tbody></table></div><h3><a name="xmlXPathCastNumberToBoolean" id="xmlXPathCastNumberToBoolean"></a>Function: xmlXPathCastNumberToBoolean</h3><pre class="programlisting">int	xmlXPathCastNumberToBoolean	(double val)<br />
 </pre><p>Converts a number to its boolean value</p>
-<div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>val</tt></i>:</span></td><td>a number</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the boolean value</td></tr></tbody></table></div><h3><a name="xmlXPathCastNumberToString" id="xmlXPathCastNumberToString"></a>Function: xmlXPathCastNumberToString</h3><pre class="programlisting"><a href="libxml-tree.html#xmlChar">xmlChar</a> *	xmlXPathCastNumberToString	(double val)<br />
+<div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>val</tt></i>:</span></td><td>a number</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the boolean value</td></tr></tbody></table></div><h3><a name="xmlXPathCastNumberToString" id="xmlXPathCastNumberToString"></a>Function: xmlXPathCastNumberToString</h3><pre class="programlisting"><a href="libxml-xmlstring.html#xmlChar">xmlChar</a> *	xmlXPathCastNumberToString	(double val)<br />
 </pre><p>Converts a number to its string value.</p>
-<div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>val</tt></i>:</span></td><td>a number</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>a newly allocated string.</td></tr></tbody></table></div><h3><a name="xmlXPathCastStringToBoolean" id="xmlXPathCastStringToBoolean"></a>Function: xmlXPathCastStringToBoolean</h3><pre class="programlisting">int	xmlXPathCastStringToBoolean	(const <a href="libxml-tree.html#xmlChar">xmlChar</a> * val)<br />
+<div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>val</tt></i>:</span></td><td>a number</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>a newly allocated string.</td></tr></tbody></table></div><h3><a name="xmlXPathCastStringToBoolean" id="xmlXPathCastStringToBoolean"></a>Function: xmlXPathCastStringToBoolean</h3><pre class="programlisting">int	xmlXPathCastStringToBoolean	(const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * val)<br />
 </pre><p>Converts a string to its boolean value</p>
-<div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>val</tt></i>:</span></td><td>a string</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the boolean value</td></tr></tbody></table></div><h3><a name="xmlXPathCastStringToNumber" id="xmlXPathCastStringToNumber"></a>Function: xmlXPathCastStringToNumber</h3><pre class="programlisting">double	xmlXPathCastStringToNumber	(const <a href="libxml-tree.html#xmlChar">xmlChar</a> * val)<br />
+<div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>val</tt></i>:</span></td><td>a string</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the boolean value</td></tr></tbody></table></div><h3><a name="xmlXPathCastStringToNumber" id="xmlXPathCastStringToNumber"></a>Function: xmlXPathCastStringToNumber</h3><pre class="programlisting">double	xmlXPathCastStringToNumber	(const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * val)<br />
 </pre><p>Converts a string to its number value</p>
 <div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>val</tt></i>:</span></td><td>a string</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the number value</td></tr></tbody></table></div><h3><a name="xmlXPathCastToBoolean" id="xmlXPathCastToBoolean"></a>Function: xmlXPathCastToBoolean</h3><pre class="programlisting">int	xmlXPathCastToBoolean		(<a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> val)<br />
 </pre><p>Converts an XPath object to its boolean value</p>
 <div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>val</tt></i>:</span></td><td>an XPath object</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the boolean value</td></tr></tbody></table></div><h3><a name="xmlXPathCastToNumber" id="xmlXPathCastToNumber"></a>Function: xmlXPathCastToNumber</h3><pre class="programlisting">double	xmlXPathCastToNumber		(<a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> val)<br />
 </pre><p>Converts an XPath object to its number value</p>
-<div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>val</tt></i>:</span></td><td>an XPath object</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the number value</td></tr></tbody></table></div><h3><a name="xmlXPathCastToString" id="xmlXPathCastToString"></a>Function: xmlXPathCastToString</h3><pre class="programlisting"><a href="libxml-tree.html#xmlChar">xmlChar</a> *	xmlXPathCastToString	(<a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> val)<br />
+<div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>val</tt></i>:</span></td><td>an XPath object</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the number value</td></tr></tbody></table></div><h3><a name="xmlXPathCastToString" id="xmlXPathCastToString"></a>Function: xmlXPathCastToString</h3><pre class="programlisting"><a href="libxml-xmlstring.html#xmlChar">xmlChar</a> *	xmlXPathCastToString	(<a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> val)<br />
 </pre><p>Converts an existing object to its string() equivalent</p>
 <div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>val</tt></i>:</span></td><td>an XPath object</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the string value of the object, NULL in case of error. A new string is allocated only if needed (@val isn't a string object).</td></tr></tbody></table></div><h3><a name="xmlXPathCmpNodes" id="xmlXPathCmpNodes"></a>Function: xmlXPathCmpNodes</h3><pre class="programlisting">int	xmlXPathCmpNodes		(<a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> node1, <br />					 <a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> node2)<br />
 </pre><p>Compare two nodes w.r.t document order</p>
-<div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>node1</tt></i>:</span></td><td>the first node</td></tr><tr><td><span class="term"><i><tt>node2</tt></i>:</span></td><td>the second node</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>-2 in case of error 1 if first point &lt; second point, 0 if it's the same node, -1 otherwise</td></tr></tbody></table></div><h3><a name="xmlXPathCompile" id="xmlXPathCompile"></a>Function: xmlXPathCompile</h3><pre class="programlisting"><a href="libxml-xpath.html#xmlXPathCompExprPtr">xmlXPathCompExprPtr</a>	xmlXPathCompile	(const <a href="libxml-tree.html#xmlChar">xmlChar</a> * str)<br />
+<div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>node1</tt></i>:</span></td><td>the first node</td></tr><tr><td><span class="term"><i><tt>node2</tt></i>:</span></td><td>the second node</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>-2 in case of error 1 if first point &lt; second point, 0 if it's the same node, -1 otherwise</td></tr></tbody></table></div><h3><a name="xmlXPathCompile" id="xmlXPathCompile"></a>Function: xmlXPathCompile</h3><pre class="programlisting"><a href="libxml-xpath.html#xmlXPathCompExprPtr">xmlXPathCompExprPtr</a>	xmlXPathCompile	(const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * str)<br />
 </pre><p>Compile an XPath expression</p>
 <div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>str</tt></i>:</span></td><td>the XPath expression</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the <a href="libxml-xpath.html#xmlXPathCompExprPtr">xmlXPathCompExprPtr</a> resulting from the compilation or NULL. the caller has to free the object.</td></tr></tbody></table></div><h3><a name="xmlXPathCompiledEval" id="xmlXPathCompiledEval"></a>Function: xmlXPathCompiledEval</h3><pre class="programlisting"><a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a>	xmlXPathCompiledEval	(<a href="libxml-xpath.html#xmlXPathCompExprPtr">xmlXPathCompExprPtr</a> comp, <br />						 <a href="libxml-xpath.html#xmlXPathContextPtr">xmlXPathContextPtr</a> ctx)<br />
 </pre><p>Evaluate the Precompiled XPath expression in the given context.</p>
@@ -241,9 +241,9 @@
 </pre><p>Converts an existing object to its number() equivalent</p>
 <div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>val</tt></i>:</span></td><td>an XPath object</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the new object, the old one is freed (or the operation is done directly on @val)</td></tr></tbody></table></div><h3><a name="xmlXPathConvertString" id="xmlXPathConvertString"></a>Function: xmlXPathConvertString</h3><pre class="programlisting"><a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a>	xmlXPathConvertString	(<a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> val)<br />
 </pre><p>Converts an existing object to its string() equivalent</p>
-<div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>val</tt></i>:</span></td><td>an XPath object</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the new object, the old one is freed (or the operation is done directly on @val)</td></tr></tbody></table></div><h3><a name="xmlXPathEval" id="xmlXPathEval"></a>Function: xmlXPathEval</h3><pre class="programlisting"><a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a>	xmlXPathEval	(const <a href="libxml-tree.html#xmlChar">xmlChar</a> * str, <br />					 <a href="libxml-xpath.html#xmlXPathContextPtr">xmlXPathContextPtr</a> ctx)<br />
+<div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>val</tt></i>:</span></td><td>an XPath object</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the new object, the old one is freed (or the operation is done directly on @val)</td></tr></tbody></table></div><h3><a name="xmlXPathEval" id="xmlXPathEval"></a>Function: xmlXPathEval</h3><pre class="programlisting"><a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a>	xmlXPathEval	(const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * str, <br />					 <a href="libxml-xpath.html#xmlXPathContextPtr">xmlXPathContextPtr</a> ctx)<br />
 </pre><p>Evaluate the XPath Location Path in the given context.</p>
-<div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>str</tt></i>:</span></td><td>the XPath expression</td></tr><tr><td><span class="term"><i><tt>ctx</tt></i>:</span></td><td>the XPath context</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the <a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> resulting from the evaluation or NULL. the caller has to free the object.</td></tr></tbody></table></div><h3><a name="xmlXPathEvalExpression" id="xmlXPathEvalExpression"></a>Function: xmlXPathEvalExpression</h3><pre class="programlisting"><a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a>	xmlXPathEvalExpression	(const <a href="libxml-tree.html#xmlChar">xmlChar</a> * str, <br />						 <a href="libxml-xpath.html#xmlXPathContextPtr">xmlXPathContextPtr</a> ctxt)<br />
+<div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>str</tt></i>:</span></td><td>the XPath expression</td></tr><tr><td><span class="term"><i><tt>ctx</tt></i>:</span></td><td>the XPath context</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the <a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> resulting from the evaluation or NULL. the caller has to free the object.</td></tr></tbody></table></div><h3><a name="xmlXPathEvalExpression" id="xmlXPathEvalExpression"></a>Function: xmlXPathEvalExpression</h3><pre class="programlisting"><a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a>	xmlXPathEvalExpression	(const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * str, <br />						 <a href="libxml-xpath.html#xmlXPathContextPtr">xmlXPathContextPtr</a> ctxt)<br />
 </pre><p>Evaluate the XPath expression in the given context.</p>
 <div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>str</tt></i>:</span></td><td>the XPath expression</td></tr><tr><td><span class="term"><i><tt>ctxt</tt></i>:</span></td><td>the XPath context</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the <a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> resulting from the evaluation or NULL. the caller has to free the object.</td></tr></tbody></table></div><h3><a name="xmlXPathEvalFunc" id="xmlXPathEvalFunc"></a>Function type: xmlXPathEvalFunc</h3><pre class="programlisting">Function type: xmlXPathEvalFunc
 void	xmlXPathEvalFunc		(<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br />					 int nargs)