test: use rundir and errorcheckdir for a few more tests.
Update #4139.
R=golang-dev, minux.ma
CC=golang-dev
https://golang.org/cl/6620070
diff --git a/test/fixedbugs/bug324.go b/test/fixedbugs/bug324.go
index ee090ae..36b8b56 100644
--- a/test/fixedbugs/bug324.go
+++ b/test/fixedbugs/bug324.go
@@ -1,11 +1,10 @@
-// $G $D/$F.dir/p.go && $G $D/$F.dir/main.go && $L main.$A && ./$A.out
-
-// NOTE: This test is not run by 'run.go' and so not run by all.bash.
-// To run this test you must use the ./run shell script.
+// rundir
// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
-// Test case for issue 1550
-ignored
+// Test case for issue 1550: a type cannot implement an interface
+// from another package with a private method, and type assertions
+// should fail.
+package ignored
