Cleanup and comment suppressions.

tests/language/language.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.
 
 # This directory contains tests that are intended to show the
 # current state of the language.
 
 # In order to maintain maximum test coverage for all builds,
 # please use the following procedure to mark a test
 # failed on architectures other than the one you are working on.
@@ skipping 106 matching lines @@
 #
 # Add new dartc annotations above in alphabetical order
 #
 
 # VM specific tests that should not be run by DartC.
 *vm_test: Skip
 *vm_negative_test: Skip
 
 
 [ $compiler == none && $runtime == drt ]
-# TODO: These need to be retriaged.
-richards_test: Fail
 gc_test: Skip # Issue 1487
-import_core_no_prefix_test: Fail
+import_core_no_prefix_test: Fail # Issue 4607
 
 [ $runtime == dartium ]
-import_core_no_prefix_test: Fail
+import_core_no_prefix_test: Fail # Issue 4607
 
 [ $runtime == chrome ]
 string_escape1_negative_test: Skip
 
 # TODO(jmesserly): now that we have a bot, we need to set up Opera testing.
 [ $runtime == opera ]
 *: Skip
 
 [ $runtime == ie && ($system == linux || $system == mac) ]
 *: Skip
@@ skipping 106 matching lines @@
 field_override_test/02: Fail
 field_override_test/none: Fail
 gc_test: Fail
 super_closure_test: Fail
 super_field_access_test: Fail
 super_first_constructor_test: Fail
 # VM specific tests.
 disable_privacy_test: Fail, Ok
 # This test hard codes name of file being run and precise position.
 generic_test: Fail, Ok