Log Message:
Update p5-XML-Simple to 2.07

  - added test to catch old versions of Storable which lack locking support
  - removed new-style loop which broke on 5.005_03
  - suppress more uninitialised variable warnings
  - fixed strict mode requiring ForceArray on output
  - fixed warnings about uninitialised values
  - fixed warnings when NormaliseSpace undefined
  - added support for specifying ForceArray using regular expressions
  - added check to escape_value to guard against undefined argument
  - added NoIndent option
  - integrated a patch
    + new facility for removing extra levels of indirection (using
      the new 'GroupTags' option)
    + new facility for rolling the dreaded 'content' hash up into a
      scalar if there are no keys left after array folding (using the
      '-' prefix mode on the ContentKey option)
    + new facility for doing variable substitution in the XML; variables
      can be defined in Perl (using the new 'Variables' option) or in
      the XML document (using the new 'VarAttr' option)
  - added 'NormaliseSpace' option for tidying up hash keys and other
    text content if required
  - option names are now case-insensitive and can include underscores
  - XMLin() and XMLout() are now aliased to xml_in() and xml_out() when
    called as methods or imported explicitly
  - option names passed to XML::Simple->new() are now validated