Changelog for Version 2.3 (note updated language files)

- fixed "crash" problem introduced with 'ogg' support for playlists;
- fixed jerky mpeg1/2 video due to incorrect memory alignment for audiobuffer caused
  by some optimization tricks;
- added 720p and 1080i video modes. Only 16 bit dithered framebuffer is currently
  supported in these modes. Background image is not implemented in 1080i mode.
  Not tested here as I don't have appropriate TV. Thanks to 'pitrz' for the implementation.
- fixed issue that prevented .sub/.txt subtitles to be loaded if they contains empty
  lines like '{3557}{3629}'. Thanks to 'grange' for the notes;
- slightly changed remote control related code;