Add support for Acelp.net fourcc and codecid, remuxing wav to avi should work

Originally committed as revision 15425 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/avcodec.h

@@ -304,6 +304,7 @@ enum CodecID {
     CODEC_ID_WMALOSSLESS,
     CODEC_ID_ATRAC3P,
     CODEC_ID_EAC3,
+    CODEC_ID_SIPR,
 
     /* subtitle codecs */
     CODEC_ID_DVD_SUBTITLE= 0x17000,

libavformat/riff.c

@@ -189,6 +189,7 @@ const AVCodecTag codec_wav_tags[] = {
     { CODEC_ID_ADPCM_IMA_DK3,   0x0062 },  /* rogue format number */
     { CODEC_ID_VOXWARE,         0x0075 },
     { CODEC_ID_AAC,             0x00ff },
+    { CODEC_ID_SIPR,            0x0130 },
     { CODEC_ID_WMAV1,           0x0160 },
     { CODEC_ID_WMAV2,           0x0161 },
     { CODEC_ID_WMAPRO,          0x0162 },