test ffserver even if ffmpeg regresion test fails

Originally committed as revision 1709 to svn://svn.ffmpeg.org/ffmpeg/trunk

tests/Makefile

@@ -20,7 +20,7 @@ test-server: vsynth1/0.pgm asynth1.sw
 
 # fast regression tests for all codecs
 test mpeg4 mpeg: vsynth1/0.pgm asynth1.sw
-	@$(SRC_PATH)/tests/regression.sh $@ $(REFFILE)
+	@$(SRC_PATH)/tests/regression.sh $@ $(REFFILE) || true
 
 # fast regression for libav formats
 libavtest: vsynth1/0.pgm asynth1.sw