preparing 2.6.7 release, updated and rebuilt the documentation. Daniel

* doc/* NEWS configure.in: preparing 2.6.7 release, updated and
  rebuilt the documentation.
Daniel
diff --git a/win32/libxml2.def.src b/win32/libxml2.def.src
index 88de819..1d4e9d5 100644
--- a/win32/libxml2.def.src
+++ b/win32/libxml2.def.src
@@ -1690,6 +1690,7 @@
 xmlTextReaderXmlLang
 xmlTextWriterEndAttribute
 xmlTextWriterEndCDATA
+xmlTextWriterEndComment
 xmlTextWriterEndDTD
 xmlTextWriterEndDocument
 xmlTextWriterEndElement
@@ -1701,6 +1702,7 @@
 xmlTextWriterStartAttribute
 xmlTextWriterStartAttributeNS
 xmlTextWriterStartCDATA
+xmlTextWriterStartComment
 xmlTextWriterStartDTD
 xmlTextWriterStartDTDAttlist
 xmlTextWriterStartDTDElement