preparing 2.4.6 release updated and rebuilt the docs fixed a number of

* configure.in: preparing 2.4.6 release
* doc/xml.html doc/html/*: updated and rebuilt the docs
* include/libxml/*.h *.c: fixed a number of teh/the widht/width typos
Daniel
diff --git a/xpath.c b/xpath.c
index 64502ee..3283283 100644
--- a/xpath.c
+++ b/xpath.c
@@ -6277,7 +6277,7 @@
  * The current char value, if using UTF-8 this may actaully span multiple
  * bytes in the input buffer.
  *
- * Returns the current char value and its lenght
+ * Returns the current char value and its length
  */
 
 static int