modified the file header to add more informations, painful... updated to

* include/libxml/*.h include/libxml/*.h.in: modified the file
  header to add more informations, painful...
* genChRanges.py genUnicode.py: updated to generate said changes
  in headers
* doc/apibuild.py: extract headers, add them to libxml2-api.xml
* *.html *.xsl *.xml: updated the stylesheets to flag geprecated
  APIs modules. Updated the stylesheets, some cleanups, regenerated
* doc/html/*.html: regenerated added back book1 and libxml-lib.html
Daniel
diff --git a/include/libxml/HTMLtree.h b/include/libxml/HTMLtree.h
index 832c7c8..157aa67 100644
--- a/include/libxml/HTMLtree.h
+++ b/include/libxml/HTMLtree.h
@@ -1,10 +1,11 @@
 /*
- * HTMLtree.h : describes the structures found in an tree resulting
- *              from an XML parsing.
+ * Summary: specific APIs to process HTML tree, especially serialization
+ * Description: this module implements a few function needed to process
+ *              tree in an HTML specific way.
  *
- * See Copyright for the status of this software.
+ * Copy: See Copyright for the status of this software.
  *
- * daniel@veillard.com
+ * Author: Daniel Veillard
  */
 
 #ifndef __HTML_TREE_H__