- cosmetic changes

(closes #108).

    suggestion from lool).

    fix (ilvu_sa cannot be -1).

video). Added some clean up.

stream.

* modules/audio_filter/channel_mixer/trivial.c: Fixed reverse stereo mode
  with MPEG files,
* src/audio_output/output.c: Fixed dual-mono handling.

* modules/access/dvdread/input.c, modules/control/rc/rc.c: fixed typos.

    instead of an error when it can't stat() the device (Closes: #77).

* modules/control/rc/rc.c: Partial fix for the rc interface under win32. On win32, select() only works on
socket descriptors so we don't use it anymore on this platform. Right now we only do a blocking call to
read() although it should be possible to have a fully functionnal interface by using the PeekConsoleInput()
call (someone willing to investigate this ?).

  category.

 * Added tooltips for the subtitles dialog box
 * Added a missing "delete"
 * Added a menu entry to spawn new interfaces (but it's currently
   disabled, due to a problem with the vlc_list_t struct)

interface modules to be loaded in the background when vlc starts. This is
usefull for lirc, logger and xosd. Also got rid of the hacky way the sap
module was inserted, as this just needs to be added to this list now.

 * Cosmetic here and there

  DISPLAY environment variable is unset (gtk like behaviour)

    detection of libdvdread.a, libdvdplay.a and libxvidcore.a. Sorry guys.

  xosd_init returns NULL
  * lib is initialized with configured font
  * more safety checks

* Fixed bugs regarding Dolby Surround downmixing.

  filetypes.
* ./modules/gui/macosx/vout.m: Made the video window a textured window
* All:
  - fixed several missing object_release bugs, that i had introduced.
  - updated the play/pause behaviour.
  - fixed an issue with the volumeslider.

  * now works under win32

 * Clean up

   according to the "enqueue" config option

    the playlist