[plt-scheme] Using one signature in place of two

On Thu, Jan 1, 2009 at 9:20 PM, Matthew Flatt <mflatt at cs.utah.edu> wrote:
> This change fixes `open' because `open' is implemented using `rename'.
> For the same reason that it fixes `open', I think it's a sensible
> change in general. Let me know, of course, if the change breaks
> anything else in your use of `scheme/unit'.

All my tests pass with a fresh build from svn.  I haven't had time to
revert back my use of signatures to a single sig; I'll let you know if
that doesn't work for some reason.  Thanks!

N.