Add the remaining test scripts unit test to the status file exclusion.

tests/standalone/standalone.status

 # Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
 package/invalid_uri_test: Fail, OK # Fails intentionally
 
-io/test_runner_exit_code_test: Fail # used by both a test and the VM. Can be reenabled when we replace the precompiled dart executable in tools.
-status_expression_test: Fail # used by both a test and the VM. Can be reenabled when we replace the precompiled dart executable in tools.
-io/status_file_parser_test: Fail # used by both a test and the VM. Can be reenabled when we replace the precompiled dart executable in tools.
+# These tests fail because the test scripts do not use the new streams library.
+# When the test scripts are updated, and the precompiled dart executable is
+# updated, they will be re-enabled.  Issue 7724.
+io/test_runner_test: Fail, Pass
+io/test_runner_exit_code_test: Fail
+status_expression_test: Fail
+io/status_file_parser_test: Fail
 
 [ $runtime == vm ]
 package/package_isolate_test: Fail # Issue 7520.
 
 io/skipping_dart2js_compilations_test: Fail # used by both a test and the VM. Can be reenabled when we replace the precompiled dart executable in tools.
 
 [ $runtime == vm && $checked ]
 # These tests have type errors on purpose.
 io/process_invalid_arguments_test: Fail, OK
 io/directory_invalid_arguments_test: Fail, OK
@@ skipping 96 matching lines @@
 [ $compiler == dart2js && $browser ]
 *: Skip
 
 [ $compiler == dart2js && $checked ]
 io/http_read_test: Skip # Timeout TODO(ngeoffray): investigate
 io/list_input_stream_test: Skip # Timeout TODO(ngeoffray): investigate
 
 [ $compiler == dart2dart ]
 # Skip until we stabilize language tests.
 *: Skip