Revert r15615: Enable AC-3 decoding regression tests.

AC-3 decoding regression test fails with gcc 2.95.3 because of missing
SSE support.

Originally committed as revision 15625 to svn://svn.ffmpeg.org/ffmpeg/trunk

tests/ffmpeg.regression.ref

@@ -177,9 +177,6 @@ stddev: 9328.41 PSNR: 16.92 bytes:  1055276/  1058444
 stddev: 4394.71 PSNR: 23.46 bytes:  1053352/  1058444
 aefe11ab5067621a1c674859d6413891 *./tests/data/a-ac3.rm
 98203 ./tests/data/a-ac3.rm
-39d5646cba5a6cfedfd58845e6df3c06 *./tests/data/ac3.vsynth.out.wav
-stddev:10496.20 PSNR: 15.90 bytes:  1056812/  1058444
-stddev: 4631.51 PSNR: 23.00 bytes:  1055788/  1058444
 39878597b1d65cce473639a7d8c93b02 *./tests/data/a-g726.wav
 24279 ./tests/data/a-g726.wav
 888f2f016e608d044a1bacbca5497ed2 *./tests/data/g726.vsynth.out.wav

tests/regression.sh

@@ -381,8 +381,9 @@ fi
 
 if [ -n "$do_ac3" ] ; then
 do_audio_encoding ac3.rm "" -vn
-do_audio_decoding
-$tiny_psnr $pcm_dst $pcm_ref 2 1024 >> $logfile
+# gcc 2.95.3 compiled binaries decode ac3 differently because of missing SSE support
+#do_audio_decoding
+#$tiny_psnr $pcm_dst $pcm_ref 2 1024 >> $logfile
 fi
 
 if [ -n "$do_g726" ] ; then

tests/rotozoom.regression.ref

@@ -177,9 +177,6 @@ stddev: 9328.41 PSNR: 16.92 bytes:  1055276/  1058444
 stddev: 4394.71 PSNR: 23.46 bytes:  1053352/  1058444
 aefe11ab5067621a1c674859d6413891 *./tests/data/a-ac3.rm
 98203 ./tests/data/a-ac3.rm
-39d5646cba5a6cfedfd58845e6df3c06 *./tests/data/ac3.rotozoom.out.wav
-stddev:10496.20 PSNR: 15.90 bytes:  1056812/  1058444
-stddev: 4631.51 PSNR: 23.00 bytes:  1055788/  1058444
 39878597b1d65cce473639a7d8c93b02 *./tests/data/a-g726.wav
 24279 ./tests/data/a-g726.wav
 888f2f016e608d044a1bacbca5497ed2 *./tests/data/g726.rotozoom.out.wav