Roll Observatory packages and add a roll script

packages/unittest/.status

Index: packages/unittest/.status
diff --git a/packages/unittest/.status b/packages/unittest/.status
new file mode 100644
index 0000000000000000000000000000000000000000..c5c82bb8d7546092b3488d86632d5b805dd8b7b2
--- /dev/null
+++ b/packages/unittest/.status
@@ -0,0 +1,51 @@
+# Copyright (c) 2014, 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.
+
+# Skip non-test files ending with "_test".
+packages/*: Skip
+*/packages/*: Skip
+*/*/packages/*: Skip
+*/*/*/packages/*: Skip
+*/*/*/*packages/*: Skip
+*/*/*/*/*packages/*: Skip
+
+# Only run tests from the build directory, since we don't care about the
+# difference between transformed an untransformed code.
+test/*: Skip
+
+[ $runtime == jsshell ]
+build/test/missing_tick_test: Fail # Timer interface not supported: dartbug.com/7728
+build/test/nested_groups_setup_teardown_test: RuntimeError # http://dartbug.com/10109
+
+[ $compiler == none && ( $runtime == dartium || $runtime == drt || $runtime == ContentShellOnAndroid) ]
+# Skip serialization test that explicitly has no library declaration in the
+# test on Dartium, which requires all tests to have a library.
+build/test/async_exception_test: RuntimeError # 13921
+build/test/async_exception_with_future_test: RuntimeError # 13921
+build/test/async_setup_teardown_test: RuntimeError # 13921
+build/test/completion_test: RuntimeError # 13921
+build/test/correct_callback_test: RuntimeError # 13921
+build/test/exception_test: RuntimeError # 13921
+build/test/excess_callback_test: RuntimeError # 13921
+build/test/expect_async_args_test: RuntimeError # 13921
+build/test/expect_async_test: RuntimeError # 13921
+build/test/group_name_test: RuntimeError # 13921
+build/test/invalid_ops_test: RuntimeError # 13921
+build/test/late_exception_test: RuntimeError # 13921
+build/test/middle_exception_test: RuntimeError # 13921
+build/test/nested_groups_setup_teardown_test: RuntimeError # 13921
+build/test/protect_async_test: RuntimeError # 13921
+build/test/returning_future_test: RuntimeError # 13921
+build/test/returning_future_using_runasync_test: RuntimeError # 13921
+build/test/runtests_without_tests_test: RuntimeError # 13921
+build/test/setup_and_teardown_test: RuntimeError # 13921
+build/test/setup_test: RuntimeError # 13921
+build/test/single_correct_test: RuntimeError # 13921
+build/test/single_failing_test: RuntimeError # 13921
+build/test/skipped_soloed_nested_test: RuntimeError # 13921
+build/test/teardown_test: RuntimeError # 13921
+build/test/testcases_immutable_test: RuntimeError # 13921
+
+[ $compiler == none && $browser ]
+build/test/missing_tick_test: RuntimeError # Expected to fail, due to timeout.