Thus fix lineendings in files that were missed in bcbf25bfbd, as
reported by Imarok.
(SVN throws an error when trying to set the native filending property on
a file with mixed fileendings. However when recursing it hides this
error).
This was SVN commit r18561.
Adds converted Relax NG XML grammars for each (Note: don't edit these
directly, modify the compact syntax .rnc files instead, then use a
conversion tool http://relaxng.org/#conversion to generate the .rng
files).
Adds Perl script to validate the XML files using the new grammars
This was SVN commit r15377.