Removed unused files.

This file need reviewing, please help

* src/input/input_dec.c: compilation fix.

* modules/packetizer/mpeg4audio.c, modules/packetizer/mpegvideo.c: compilation fix.

* modules/gui/wxwindows/wxwindows.h: workaround/compilation fix for new wxWindows versions.

 field and a few BLOCK_FLAG_*.

Andr� de Barros Martins Ribeiro

* modules/gui/wxwindows/menus.cpp: try to display choices menus in a more clever way (hide useless things like empty menus).

* modules/demux/dts.c: improved detection of wav dts files.

Strangely, the "AddPendingEvent" wxwindows call seems to hang, so
replace it bhy "ProcessEvent" (the playlist update is processed
immediately in the callback, but it is only the update of one item, so
it should not be a problem)

* modules/access/cdda.c: added "cddasimple" shortcut.

* modules/stream_out/transcode.c: compilation fixes for ffmpeg-0.4.8.

* modules/demux/wav.c: more fixes for multichannel wav files support.
* include/codecs.h: ms speakers definitions.
* modules/codec/araw.c: added support for fl64 fourcc.

* src/playlist/playlist.c: who said testing was useful ?

* src/playlist/playlist.c: bug fix.

 * fixed two memleaks, one of them rather large
 * fix for http announces that don't start the filename part with '/'

 using weird value after a synch with RTCP.

* include/vlc_common.h: added the UI64C() macro for unsinged long long constants.

* src/playlist/playlist.c: vout/sout garbage collection improvements.

* modules/access/cdda/access.c: fix to allow playing the last track and cd's with only 1 track.

* src/misc/threads.c: fixed a Darwin-specific bug introduced recently

* configure.ac: added an --enable-utf8 option (default enabled on osx/beos/win32).
* src/libvlc.c, modules/gui/wxwindows/wxwindows.h: use #ifdef ENABLE_UTF8