Roll Observatory packages and add a roll script

packages/polymer_expressions/.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.
+
+# Don't run any test-like files that show up in packages directories. It
+# shouldn't be necessary to run "pub install" in these packages, but if you do
+# it shouldn't break the tests.
+*/packages/*/*: Skip
+*/*/packages/*/*: Skip
+*/*/*/packages/*/*: Skip
+*/*/*/*/packages/*/*: Skip
+*/*/*/*/*/packages/*/*: Skip
+
+build/test/eval_test: Skip      # avoid testing twice
+build/test/parser_test: Skip    # avoid testing twice
+build/test/tokenizer_test: Skip # avoid testing twice
+build/test/visitor_test: Skip   # avoid testing twice
+
+[ $compiler == dart2js ]
+test/syntax_test: Skip  # use pub-build to test together with the .html file
+test/globals_test: Skip  # use pub-build to test together with the .html file
+test/bindings_test: Skip  # use pub-build to test together with the .html file
+
+[ $ie ]
+build/test/syntax_test: Fail, Timeout, Pass # Issue 19138
+
+[ $runtime == ie10 ]
+test/*: Pass, RuntimeError # Issue 19265
+
+[ $runtime == vm ]
+test/syntax_test: Skip
+test/globals_test: Skip
+test/bindings_test: Skip
+build/*: Skip