make valgrind output go into test-specific log file instead of one massive valgrind.log
diff --git a/test/test_libFLAC++.sh b/test/test_libFLAC++.sh
index a5e6dfd..c0a86f0 100755
--- a/test/test_libFLAC++.sh
+++ b/test/test_libFLAC++.sh
@@ -31,7 +31,7 @@
 run_test_libFLACpp ()
 {
 	if [ "$FLAC__VALGRIND" = yes ] ; then
-		valgrind --leak-check=yes --show-reachable=yes --num-callers=100 --logfile-fd=4 test_libFLAC++ $* 4>>valgrind.log
+		valgrind --leak-check=yes --show-reachable=yes --num-callers=100 --logfile-fd=4 test_libFLAC++ $* 4>>test_libFLAC++.valgrind.log
 	else
 		test_libFLAC++ $*
 	fi