svq3 decoder may need zlib

Originally committed as revision 15722 to svn://svn.ffmpeg.org/ffmpeg/trunk

configure

@@ -953,6 +953,7 @@ sonic_decoder_select="golomb"
 sonic_encoder_select="golomb"
 sonic_ls_encoder_select="golomb"
 svq3_decoder_select="golomb"
+svq3_decoder_suggest="zlib"
 tiff_decoder_suggest="zlib"
 tiff_encoder_suggest="zlib"
 tscc_decoder_select="zlib"