I don't want co to perform a checkout (without lock) if no change
has been made to the file. Since the co changes date, all the files
seem new if date is considered, even though they haven't changed.
Since we have many scripts using co, I don't like to change
all of them.
RCS co itselft doesn't seem to support this feature,
correct me if I've missed it.
Thank's for any suggestions!