[PATCH now with a test] showconfig: don't accept multiple sections and one config item

[Mads Kiilerich]

  Brodie Rao wrote, On 10/09/2010 04:57 PM:
> # HG changeset patch
> # User Brodie Rao<brodie at bitheap.org>
> # Date 1286661333 18000
> # Node ID 8efec506f6929cac2a182e7b48d5fa80579f5a2a
> # Parent  ef500b2f100b8cbc20dfc90b78e17092e730de48
> showconfig: don't accept multiple sections and one config item

Thanks, pushed with a slightly more verbose description.

/Mads