Move 3 direct MV related functions that i left out from h263.c to mpeg4video.c.

Originally committed as revision 21104 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/mpeg4video.h

@@ -104,6 +104,13 @@ void ff_clean_mpeg4_qscales(MpegEncContext *s);
 int ff_mpeg4_decode_partitions(MpegEncContext *s);
 int ff_mpeg4_get_video_packet_prefix_length(MpegEncContext *s);
 int mpeg4_decode_video_packet_header(MpegEncContext *s);
+void ff_mpeg4_init_direct_mv(MpegEncContext *s);
+
+/**
+ *
+ * @return the mb_type
+ */
+int ff_mpeg4_set_direct_mv(MpegEncContext *s, int mx, int my);
 
 extern uint8_t ff_mpeg4_static_rl_table_store[3][2][2*MAX_RUN + MAX_LEVEL + 3];