Merge "Revert "Revert "bootstat: Handle v1 record files which do not contain file contents.""" into nyc-dev
am: c1b10a9

* commit 'c1b10a9e84d675a3611e8bb5ee93001e8a286932':
  Revert "Revert "bootstat: Handle v1 record files which do not contain file contents.""