Use checked-in .package file for building and testing

tests/standalone/standalone.status

 # Copyright (c) 2013, 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.
 
 # WARNING:
 # Tests using the multitest feature where failure is expected should *also* be
 # listed in tests/lib/analyzer/analyze_tests.status without the "standalone"
 # prefix.
 
 packages_file_test: Skip # Issue 26715
@@ skipping 12 matching lines @@
 [ ($runtime != vm || $compiler != none) && $compiler != dartanalyzer && $compiler != dart2analyzer ]
 packages_file_test: Skip # Uses Platform.executable
 
 [ ($runtime != vm && $runtime != dart_precompiled && $runtime != dart_app) && ($runtime != drt || $compiler != none)) ]
 no_assert_test: Fail, OK # This is testing a vm flag.
 
 [ ($runtime == vm || $runtime == dart_precompiled || $runtime == dart_app) ]
 package/package_isolate_test: Fail # Issue 12474
 io/observatory_test: Fail
 package/scenarios/invalid/same_package_twice_test: Pass # Issue 24119
+io/addlatexhash_test: Fail # Package root changed to implicit package spec.
 
 [ ($runtime == vm || $runtime == dart_precompiled || $runtime == dart_app) && $checked ]
 # These tests have type errors on purpose.
 io/process_invalid_arguments_test: Fail, OK
 io/directory_invalid_arguments_test: Fail, OK
 io/file_invalid_arguments_test: Fail, OK
 io/internet_address_invalid_arguments_test: Fail, OK
 io/socket_invalid_arguments_test: Fail, OK
 io/stdout_bad_argument_test: Fail, OK
 # These test have type errors on purpose and take very long to run in
@@ skipping 292 matching lines @@
 package/*: SkipByDesign # Launches VMs in interesting ways.
 
 [ $builder_tag == no_ipv6 ]
 io/http_bind_test: Skip
 io/raw_datagram_socket_test: Skip
 io/socket_source_address_test: Skip
 io/socket_bind_test: Skip
 io/http_proxy_advanced_test: Skip
 io/http_ipv6_test: Skip
 io/socket_ipv6_test: Skip