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

genUnicode.py

@@ -209,7 +209,8 @@ date = time.asctime(time.localtime(time.time()))
 
 header.write(
 """/*
- * xmlunicode.h: this header exports interfaces for the Unicode character APIs
+ * Summary: Unicode character APIs
+ * Description: API for the Unicode character APIs
  *
  * This file is automatically generated from the
  * UCS description files of the Unicode Character Database
@@ -218,7 +219,7 @@ header.write(
  *
  * Generation date: %s
  * Sources: %s
- * Daniel Veillard <veillard@redhat.com>
+ * Author: Daniel Veillard
  */
 
 #ifndef __XML_UNICODE_H__