Tele-typewriter demuxer

Originally committed as revision 24301 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavformat/allformats.c

@@ -198,6 +198,7 @@ void av_register_all(void)
     REGISTER_MUXDEMUX (TRUEHD, truehd);
     REGISTER_DEMUXER  (TTA, tta);
     REGISTER_DEMUXER  (TXD, txd);
+    REGISTER_DEMUXER  (TTY, tty);
     REGISTER_DEMUXER  (VC1, vc1);
     REGISTER_MUXDEMUX (VC1T, vc1t);
     REGISTER_DEMUXER  (VMD, vmd);