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This means all imports of unittest in our test code had to change to include 'lib' in the path. While doing that change I changed the library/imports to the new syntax in the affected files. Review URL: https://codereview.chromium.org//11301046 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@14443 260f80e4-7a28-3924-810f-c04153c831b5