sort playlist function.

* modules/access/v4l/v4l.c: big clean-up of the Video4Linux input.
   New --v4l-vdev and --v4l-adev config options and the ability to play an audio only stream.

* modules/gui/wxwindows/streamout.cpp: fixed a couple of things.

* include/vlc_codec.h, modules/codec/ffmpeg/encoder.c, modules/stream_out/transcode.c: tell the encoder to respect the aspect ratio of the input.
* modules/gui/wxwindows/preferences_widgets.cpp: compilation fix.
* src/misc/configuration.c: use strtol() instead of atoi().

* src/input/input.c: honor the --demux config option (will be overriden if demux is specified in the MRL).
   I'm not exactly sure this is wise as some users will surely fuck-up their preferences and force a specific demux...
   but this also allows me to specifiy the demuxdump demux with an input option (very handy to include the demuxdump option in the streamout gui dialogs).
* src/misc/modules.c: changed module_Need() to use var_Get() instead of config_Get.

* modules/gui/wxwindows/*: moved the demuxdump option from the open dialog to the streamout dialog.

* modules/codec/ffmpeg/encoder.c: fixed bug in the audio encoder.
* modules/gui/wxwindows/preferences_widgets.*: bug fix.

* modules/gui/wxwindows/preferences_widgets.*: added a refresh button for config vars with choices lists which have a pf_list_update callback.
* modules/access/dshow/dshow.cpp: provide a callback to update the devices lists.

  maybe this will fix the random crashes?

   String choices lists can now also have a list of text descriptions associated with them.
   Added integer choices lists.
* modules/gui/wxwindows/: modified config widgets to use the new config options.
* ALL: updated for the new config options.

* include/codecs.h:
  - created a subtitle_data_t to be used by subtitle demuxers
    and decoders to pass information.
  - ToDo: access/dvd/es.c and spudec need to be fixed to use the palette field
    of this new struct.
* modules/codec/subsdec.c:
  - moved the decoding of ssa textlines to here.
  - ToDo: support for any tags is lacking atm., but now possible.
* modules/demux/mkv.cpp:
  - ssa is now passed undecoded to ssa subsdec.
  - ssa headers are passed to ssa subsdec via subtitle_data_t
  - ToDo: decode idx header info and fill the subtitle_data_t
  - ToDo: support for compressed vobsubs.
* modules/demux/util/sub.?:
  - moved ssa decoding out of here.
  - ToDo: add support for multiple tracks
  - ToDo: implement reading vobsub .sub files (not .idx)

* src/video_output/vout_synchro.c, include/vout_synchro.h: got rid of the dependency on the vout.
* modules/codec/libmpeg2.c: updated with the synchro api changes.

    + Build-depend on fixed dvb-dev packages.

     fixed a link issue on BeOS
 + modules/demux/util/sub.c:
     gcc != 3 fix
 + modules/gui/beos/*:
     compile fixes; never replace int32 with int32_t, these are not the
     same on BeOS (long/int)

 * hotkeys: never _never_ use  demux_Control outside of src/input/ (it's
 completely broken,  there is a lot  more things to do),  all interfaces
 have  to  use  var_Get/Set  (time(-offset),  position(-offset),  state,
 rate(-slower|-faster)...  ).
 Btw,   input_SetStatus,   input_Seek,   input_Tell,   input_ChangeArea,
 input_ToggleES,  will   be  quickly   obsolete  and   removed(at  least
 unavailable for intf), so we should convert remaining interfaces (ie all
 except wx, osx, rc, http, hotkeys).

 * avi: implemented DEMUX_SET_TIME (not yet used).

 I have not kept the compatibility with older faad version (but check is
 still be  done in configure.ac). (I  didn't like it as  old version are
 really buggy).

* modules/access/dshow/*: attempt at supporting DV inputs (completely untested).

* ALL: bring the project files to XCode.
  10.2 users should revert the change in Makefile.am or they won't be able to
  build VLC on their machine. Editing the project files will probably also not
  be possible for them.

* modules/demux/mpeg/*: added support for ISO/IEC 13818-7 Audio with ADTS transport syntax to the TS demux.

 * http.c,index.html: add seek function in http interface. Also added "stream_position", "stream_length", and "stream_time" which could be usefull later (for a slider, for example :) )
 * changed http interface more "neutral" colors

* modules/control/http.c: cough cough.

* Makefile.am: small change to the package-win32 target.

* modules/gui/wxwindows/preferences_widgets.cpp: show the current value when using sliders.

* modules/demux/util/id3.c, modules/demux/util/id3tag.c: don't use input_Peek() to read an id3 tag as these tags can be bigger than what input_Peek() can read.

* Makefile.am: include the .css file from the html interface into the win32 package.

* modules/control/http.c: delete command supports a list of items.
* doc/intf-http.txt: update for delete command.
* share/http/index.html: added the possibility to delete playlist items.

 * proper fix for timing with vobsub tracks ( and possibly some other cases )

 * fix a segfault on close caused by setting default language

* src/audio_output/input.c: on-the-fly visualization changes.
* modules/gui/wxwindows/menus.cpp: added a visualization entry.