Log Message:
Update to 0.4.3.

Many changes. See http://kazehakase.sourceforge.jp/

Some of the changes include:

    * Fix wrong labels in Certificate Properties dialog.(Jan Jeronym Zvanovec)
    * used ruby_disable_message.(Kouhei SUTOU)
    * fix the compile problem on NetBSD(Hiroyuki IKEZOE)
    * fix bug of purge_history_file_by_timestamp(). (Ryo SHIMIZU)

    * support gziped favicon (Kouhei SUTOU)
    * use "/favion.ico" as favicon file automatically if favicon URI \ 
is not specified by <link ref="..."> tag. (Kouhei SUTOU, Ryo \ 
SHIMIZU)
    * make exit process faster (Ryo SHIMIZU)

    * bug fix of GoUp action(Tomoyuki KAMO)
    * use "RSS" when the page title is null(Ryo SHIMIZU)
    * New creating thumbnail process with new GECKO APIs. But it is \ 
caprice(Hiroyuki IKEZOE)
    * Can compile with Firefox2.0 beta(Hiroyuki IKEZOE)
    * Show rendering engine on "About" dialog(Kouhei SUTOU)