Simplify multi-column to single column , fixes #4184

[jeffgoh]

Fixes #4184 - Negative repeat count does nothing at /usr/lib64/perl5/vendor_perl/Cyrus/IMAP/Shell.pm line 688

[elliefm]

Thanks for submitting this! I've been re-reading the original issue to refresh my memory, and in a comment there, I said this:

I think all the calculation of $w, $ll, $n, $c are unnecessary once the column formatting is discarded, so you should also remove the parts that calculate those values. $l and @l look like they're still needed though.

You haven't removed those parts though, do you mind doing so (and test it out)? I could do it myself, but I don't actually use cyradm, so it would be hard for me to check whether I've accidentally broken something. I think the changes you need are like this:

• line 662 -> remove $w,
• line 668 -> remove line (no longer need to initialise $w)
• lines 677-679 -> remove lines (no longer need to compute $w)
• lines 684-687 -> remove lines (no longer need $ll, $w, $n, $c)

You might want to do these in the reverse order so the line numbers don't change as you make the changes... :)

Also, this PR branch has a merge commit on it. Could you please rebase to get rid of the merge, and then force-push? If you don't know how to do this, that's okay, I'll land the PR manually and do it myself in the process. But if you do, it would make life easier. Thanks!