A minor fixup for patch607
1 patch for repository darcs-unstable@darcs.net:screened:
Sat Aug 13 17:06:15 BST 2011 Ganesh Sittampalam <ganesh@earth.li>
* update check-read-only test so it fails properly
Looks like we need 'diff -r' to get a failing exit code, at least
on Windows