trying to fix windows/configure issues reported by Tim Van Holder Daniel

* configure.in xml2-config.in: trying to fix windows/configure
  issues reported by Tim Van Holder
Daniel
diff --git a/xml2-config.in b/xml2-config.in
index f679d81..c9c905c 100644
--- a/xml2-config.in
+++ b/xml2-config.in
@@ -88,7 +88,7 @@
 		echo @XML_LIBDIR@ @XML_LIBS@ 
 	    fi
 	else
-	    echo @XML_LIBDIR@ @XML_LIBS@ 
+	    echo @XML_LIBDIR@ @XML_LIBS@ @WIN32_EXTRA_LIBADD@
 	fi
        	;;