Fix type in changes.xml.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/collections/trunk@1469008 13f79535-47bb-0310-9956-ffa450edef68
Disable serialization file creation.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/collections/trunk@1469009 13f79535-47bb-0310-9956-ffa450edef68