Log Message:
Update to 2.14:

2.14  Jan 29 2005
      - unlink and lock fixes for VMS (patch from Peter (Stig) Edwards)

2.13  Nov 17 2004
      - Fixed bug where NoIndent broke KeyAttr (reported by David Haas)
      - Added copy_hash helper method which may be overridden to avoid
        tied hashes becoming untied during XMLout (patch from Jan Sundberg)
      - Fixed bug where GroupTags corrupted source hashref in XMLout
        (reported by Bram)
      - Tweaks to SuppressEmpty for undef with XMLout (report from jamesb),
        behaviour now matches docs and additional behaviour of setting
        option to 1 will skip undefined values altogether