Fixed SGML catalogs breakage of 2.4.7, added a couple of really needed

* include/libxml/catalog.h catalog.c: Fixed SGML catalogs
  breakage of 2.4.7, added a couple of really needed APIs
  like xmlCatalogIsEmpty() and xmlNewCatalog()
* xmlcatalog.c: updated --sgml --noout to be a suitable replacement
  for install-catalog
* configure.in: preparing 2.4.8
Daniel
diff --git a/libxml.spec.in b/libxml.spec.in
index 12c888a..08dbef8 100644
--- a/libxml.spec.in
+++ b/libxml.spec.in
@@ -46,6 +46,10 @@
 
 %changelog
 
+* Sun Nov  4 2001 Daniel Veillard <veillard@redhat.com>
+
+- 2.4.7 broke SGML catalogs badly. this fixes it.
+
 * Thu Apr 26 2001 Toshio Kuratomi <badger@prtr-13.ucsc.edu>
 
 [2.3.7]