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Currently runtime/tools/make_version.py creates the version string itself. Since this is already done in tools/release/version.dart, we should use that. tools/utils.py provides a python wrapper around it with GetVersion(). Review URL: https://codereview.chromium.org//11440010 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@15769 260f80e4-7a28-3924-810f-c04153c831b5