trying to enable libamrnb support. The latter function is actually used.
patch by Martin Storsjö, martin martin st
Originally committed as revision 18526 to svn://svn.ffmpeg.org/ffmpeg/trunk
# these are off by default, so fail if requested and not available
enabled avisynth && require2 vfw32 "windows.h vfw.h" AVIFileInit -lvfw32
-enabled libamr_nb && require libamrnb amrnb/interf_dec.h Speech_Decode_Frame_init -lamrnb -lm
+enabled libamr_nb && require libamrnb amrnb/interf_dec.h Decoder_Interface_init -lamrnb -lm
enabled libamr_wb && require libamrwb amrwb/dec_if.h D_IF_init -lamrwb -lm
enabled libdirac && add_cflags $(pkg-config --cflags dirac) &&
require libdirac libdirac_decoder/dirac_parser.h dirac_decoder_init -ldirac_decoder &&