tree cda1538d47201354c82116b5025c1e3dd8fddb71
parent 7d619f18a277ee3114624df7301db94db83936b9
author Joe Onorato <joeo@android.com> 1246035465 -0400
committer Joe Onorato <joeo@android.com> 1246035465 -0400

Test that we correctly back up an empty file.

(It turns out that we do.  It didn't used to work, I'm not
sure what changed)