* modules/access/dvdnav.c: chapters start from 1.
* modules/gui/wxwindows/menus.cpp: removed debug message.

  + fixed typo in INPUT_CONTROL_SET_SEEKPOINT_NEXT.
  + a few coding style changes.
* input/var.c:
  + use the descriptive name for titles/chapters if available.

* modules/gui/skins2/x11/x11_window.cpp: "stay on top" support if window manager supports _NET_WM_STATE_STAYS_ON_TOP.

* playlist/playlist.c: with autodeletion, destroy the input before deleting the playlist item (shared data between both).

 * sub ->subtitle : converted sub.c to a 'real' demux2.
 * input.c: added basic multi-input support for subtitle.
 * avi, mp4: don't exit anymore when no es selected.

* modules/gui/wxwindows/menus.cpp: wallpaper entry in the menu.

* access/dvdread.c: added dvdsimple shortcut.

    + Moved the shared object suffix detection to vlc.m4.
    + Replaced AX_* macros with VLC_* macros.

    + Play nicely with recent automake versions.

  + major rewrite of the dvdread module.
  + dvdread is now an access_demux module.

  + removed dvdplay module which was deprecated in favor of the dvdnav one.
  + removed dvd module which is going to be replace with a new dvdread one.

 (becarefull, it's just if you can seek or not, and not if you have to
 display the progress bar, for thet last you have to check if "position"
 value get != 0.0 )
       - added "audio-delay" and "spu-delay" object variables to delay
 audio/spu to the video. They can be changed on the fly (untested).
       - renamed INPUT__GET/SET_SUBDELAY into
 INPUT_SET_SPU_DELAY and added INPUT_SET_AUDIO_DELAY
 (wrapper to "audio-delay" and "spu-delay")
 - readded INPUT_ADD/GET_INFO/INPUT_SET_NAME. Becarefull to not over-use
them, a demuxer should export DEMUX_GET_META and not using them.

* src/input/stream.c: fixed detection of EOF.