also gets the tests running

Changes to scripts:
* pkg/pkg.gyp: add 'third_party' to list of folders to search
* tools/publish_pkg.py: update copyright year
* tools/publish_all_pkgs.py: also include pkg/third_party

Changes to html5lib:
* pubspec.yaml -- removed versions
* README.md -- removed some historical notes
* added html5lib.status
* test/browser -- rename browser_tests to browser_test so test framework finds it
* test/parser_test.dart, test/parser_feature_test.dart -- moved dart:io test into parser_test so parser_feature_test can work in browser
* test/support.dart -- now finds the data folder relative to entry point script
* test/support.dart -- rename "pathos" import to "path"

Not changed:
* ./test/run.sh still works for testing, in addition to ./tools/test.dart

R=dgrove@google.com, ricow@google.com, sigmund@google.com

Review URL: https://codereview.chromium.org//22375011

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart/pkg/third_party/html5lib@26152 260f80e4-7a28-3924-810f-c04153c831b5