Merge "slightly clarify error message from check_boot_jars.py"

      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: unknown package name of class file %s'

        print >> sys.stderr, ('Error: %s contains class file %s, which is not in the whitelist'

                              % (jar, f))

        return False

  return True