upated the news regenerated the docs, preparing for release of 2.6.23

* NEWS configure.in libxml.spec.in testapi.c doc/*: upated the news
  regenerated the docs, preparing for release of 2.6.23
* pattern.c xmlschemas.c: fixed some comments
Daniel
diff --git a/xmlschemas.c b/xmlschemas.c
index 459bcde..0da3564 100644
--- a/xmlschemas.c
+++ b/xmlschemas.c
@@ -17843,7 +17843,7 @@
 }
 
 #ifdef DEBUG_TYPE
-void
+static void
 xmlSchemaDebugFixedType(xmlSchemaParserCtxtPtr pctxt,
 		       xmlSchemaTypePtr type)
 {