Add some files generated by regression tests.

Originally committed as revision 4605 to svn://svn.ffmpeg.org/ffmpeg/trunk

tests/.cvsignore

@@ -6,3 +6,11 @@ Makefile.*
 .depend
 dsptest
 dsptestpic
+asynth1.sw
+audiogen
+data
+rotozoom
+tiny_psnr
+videogen
+vsynth1
+vsynth2