Merge "Disallow unnamed package on the bootclasspath."

    if f.endswith('.class'):

      package_name = os.path.dirname(f)

      package_name = package_name.replace('/', '.')

      # Skip class without a package name

      if package_name and not whitelist_re.match(package_name):

        print >> sys.stderr, ('Error: %s contains class file %s, whose package name %s is not '

                              'in the whitelist %s of packages allowed on the bootclasspath.'

      if not package_name or not whitelist_re.match(package_name):

        print >> sys.stderr, ('Error: %s contains class file %s, whose package name %s is empty or'

                              ' not in the whitelist %s of packages allowed on the bootclasspath.'

                              % (jar, f, package_name, whitelist_path))

        return False

  return True