Update localization of anaconda models for centos-5.
    
    - Previously, localization files were stored inside the
      language-specific directory. This update changes this directory
      structure to fit directory structure produced by locale module,
      which is a Locales/${TCAR_SCRIPT_LANG_LC}/${FILE}.po.
    
    - Previously, there was just one messages.po file for each supported
      language that contained the translatable strings of all svgz files.
      This update changes the file distribution to fit the file
      distribution produced by locale module, which is one PO file for
      each source file inside a directory for each supported language.
    
    - The render.conf.tpl file was also updated to reflect the changes in
      the directory structure.