Log Message:
Update sylpheed to 0.9.9, main changes are:
    * Word wrapping on multibyte locales has been improved.
    * The receive menu has been improved.
    * The combo button for toolbar has been implemented.
    * The download feature for IMAP / News folders has been implemented.
    * URL is now shown on the statusbar when links are clicked, and
      warning is displayed in case of fake URL.
    * JIS X 0201 Kana (hankaku kana) will be converted into JIS X 0208
      when sending.
    * Crashes on 64-bit environments has been fixed.
    * Other bugfixes have been made.