libavcodec ff_vdpau_ symbols

######### Building XBMC ERROR with External FFMPEG
checking for ff_vdpau_vc1_decode_picture in -lavcodec... no
configure: error: == External ffmpeg doesn't support VDPAU. VDPAU support disabled. ==
====
configure:23807: checking for    in -lavcodec
configure:23832: gcc -o conftest  -fPIC -DPIC -D_REENTRANT -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -DNDEBUG=1 -O2 conftest.c -lavcodec -lsmbclient -l
Xrandr -lavahi-client -lavahi-common -lpulse -lmicrohttpd -lSDL_image -lSDL_mixer -lrt -ljasper -lresolv -ldl -lyajl -lmysqlclient -lssl -lcrypto -lz -llzo2 -lpthread -ltiff -ljpeg -lbz2 -lgcrypt -lGLU -lGLEW -lGL  -L/usr/lib -lmysqlclient -lpthread -lz -lm -lrt -lssl -lcrypto -ldl -lfontconfig -lfribidi -lsqlite3 -lpng14 -lpcre -lpcre -lpcrecpp -lcdio -lm -lsamplerate -lfreetype -lasound -ldbus-1 -lpthread -lrt -lSDL -lpthread -lX11 -lXext -lXt -lX11 -lXmu -lXt -lX11 -ludev -lrt -lavcodec -lavfilter -lavformat -lavutil -lpostproc -lswscale >&5
/tmp/ccISJA8P.o: In function `main':
conftest.c:(.text.startup+0x7): undefined reference to `ff_vdpau_vc1_decode_picture'
collect2: ld returned 1 exit status
configure:23832: $? = 1
configure:23841: result: no
configure:23852: error: == External ffmpeg doesn't support VDPAU. VDPAU support disabled. ==
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######### Verified that these symbols are not in my libavcodec.so.53.29.0
[arch@Arch64 lib]$ ls libavcodec*
libavcodec.so  libavcodec.so.53  libavcodec.so.53.29.0
[arch@Arch64 lib]$ readelf -a libavcodec.so.53.29.0 | grep vdpau

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######### Checked old version of ffmpeg that worked
[root@Mac lib]# ls libavcodec*
libavcodec.a  libavcodec.so  libavcodec.so.52  libavcodec.so.52.122.0
[root@Mac lib]# readelf -a libavcodec.so.52.122.0 | grep vdpau
   348: 0040a340   681 FUNC    GLOBAL DEFAULT   12 ff_vdpau_vc1_decode_pictu@@LIBAVCODEC_52
   498: 004099f0   596 FUNC    GLOBAL DEFAULT   12 ff_vdpau_h264_set_referen@@LIBAVCODEC_52
   683: 00409d60   944 FUNC    GLOBAL DEFAULT   12 ff_vdpau_h264_picture_com@@LIBAVCODEC_52
   749: 0040a5f0   581 FUNC    GLOBAL DEFAULT   12 ff_vdpau_mpeg4_decode_pic@@LIBAVCODEC_52
  1131: 0040a110   551 FUNC    GLOBAL DEFAULT   12 ff_vdpau_mpeg_picture_com@@LIBAVCODEC_52
  1374: 00409cd0   137 FUNC    GLOBAL DEFAULT   12 ff_vdpau_h264_picture_sta@@LIBAVCODEC_52
  1446: 00409c50   118 FUNC    GLOBAL DEFAULT   12 ff_vdpau_add_data_chunk@@LIBAVCODEC_52
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