- Fix the make lint (validate) target
- Add a Subversion config fragment that sets the SVN properties when adding
  files
- Add dtd to validate the mirrors database
- Restore support for make lint
- Validation is now actually XML validation
- Drop some old artifacts and go towards XML validity
- Add XML declaration to non-ASCII key files
- Make the German documentation valid XML
- Make the Greek documentation valid XML
- Make the English documentation valid XML
- Make the Spanish documentation valid XML
- Make the French documentation valid XML
- Make the Hungarian documentation valid XML
- Make the Italian documentation valid XML
- Make the Japanese documentation valid XML
- Make the Mongolian documentation valid XML
- Make the Dutch documentation valid XML
- Make the Polish documentation valid XML
- Make the Brazilian Portuguese documentation valid XML
- Make the Russian documentation valid XML
- Make the Simplified Chinese documentation valid XML