Move external library registrations into a separate block after all native

implementations so that the latter ones are preferred by default.

Originally committed as revision 10945 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavformat/allformats.c

@@ -92,8 +92,6 @@ void av_register_all(void)
     REGISTER_MUXDEMUX (IMAGE2PIPE, image2pipe);
     REGISTER_DEMUXER  (INGENIENT, ingenient);
     REGISTER_DEMUXER  (IPMOVIE, ipmovie);
-    REGISTER_DEMUXER  (LIBDC1394, libdc1394);
-    REGISTER_MUXDEMUX (LIBNUT, libnut);
     REGISTER_MUXDEMUX (M4V, m4v);
     REGISTER_MUXDEMUX (MATROSKA, matroska);
     REGISTER_MUXER    (MATROSKA_AUDIO, matroska_audio);
@@ -171,6 +169,10 @@ void av_register_all(void)
     REGISTER_DEMUXER  (X11_GRAB_DEVICE, x11_grab_device);
     REGISTER_MUXDEMUX (YUV4MPEGPIPE, yuv4mpegpipe);
 
+    /* external libraries */
+    REGISTER_DEMUXER  (LIBDC1394, libdc1394);
+    REGISTER_MUXDEMUX (LIBNUT, libnut);
+
     /* protocols */
     REGISTER_PROTOCOL (FILE, file);
     REGISTER_PROTOCOL (HTTP, http);