new API building Python script, does the C parsing directly, generates a

* doc/apibuild.py doc/libxml2-api.xml doc/Makefile.am: new API
  building Python script, does the C parsing directly, generates
  a better API description including structure fieds defs and
  enums. Still a couple of bugs, but good enough for the python
  wrappers now.
* DOCBparser.c SAX.c nanohttp.c parser.c parserInternals.c tree.c
  valid.c xmlIO.c xmlmemory.c xmlreader.c xmlregexp.c xmlschemas.c
  include/libxml/schemasInternals.h include/libxml/tree.h: more
  cleanup based on the python analysis script reports.
* libxml.spec.in: make sure the API XML description is part of the
  devel package.
Daniel

DOCBparser.c

@@ -68,18 +68,6 @@ struct _docbEntityDesc {
     const char *desc;   /* the description */
 };
 
-#if 0
-docbElemDescPtr        docbTagLookup   (const xmlChar *tag); 
-docbEntityDescPtr      docbEntityLookup(const xmlChar *name);
-docbEntityDescPtr      docbEntityValueLookup(int value);
-
-int                    docbIsAutoClosed(docbDocPtr doc,
-                                        docbNodePtr elem);
-int                    docbAutoCloseTag(docbDocPtr doc,
-                                        const xmlChar *name,
-                                        docbNodePtr elem);
-
-#endif
 static int             docbParseCharRef(docbParserCtxtPtr ctxt);
 static xmlEntityPtr    docbParseEntityRef(docbParserCtxtPtr ctxt,
                                         xmlChar **str);