- Refined authentication error messages to fit original message again. - Made createUnauthorizedResponse() public and marked it @access private to   access it in ezcWebdavSimpleBackend.
- Refined authentication error messages to fit original message again.
- Made createUnauthorizedResponse() public and marked it @access private to
  access it in ezcWebdavSimpleBackend.



zetacomponents/Webdav,Melody/Webdav,zetacomponents/Webdav,zetacomponents/Webdav,Melody/Webdav,ezpublishlegacy/Webdav,ezpublishlegacy/Webdav,Melody/Webdav,ezpublishlegacy/Webdav