silencing an useless values display

funcs/contour2x2.c

@@ -49,7 +49,7 @@ else	{
 	}
 
 foo = fimg_meanvalues(psrc, avg);
-if (verbosity) {
+if (verbosity > 1) {
 	fprintf(stderr, "mean values : %f %f %f\n", avg[0], avg[1], avg[2]);
 	}