- Makefile.am: cleanup when --without-debug is specified

- xinclude.c xpath.c xpathInternals.h xpointer.c: cleanup
  w.r.t. --without-debug and other include points
- catalog.h testCatalog.c: a bit of cleanup and prepare for XML
  Catalogs
- configure.in entities.h tree.h HTMLparser.c: removed
  --without-corba, made the _private field mandatory
Daniel

HTMLparser.c

@@ -1833,9 +1833,7 @@ htmlNewDocNoDtD(const xmlChar *URI, const xmlChar *ExternalID) {
     cur->compression = 0;
     cur->ids = NULL;
     cur->refs = NULL;
-#ifndef XML_WITHOUT_CORBA
     cur->_private = NULL;
-#endif
     return(cur);
 }