Resolve copyright of Toolbox/Optimizers/ipopt.m

Toolbox/Optimizers/ipopt.m has a copyright from peter Carbonetto in it.

```
%   Copyright (C) 2008 Peter Carbonetto. All Rights Reserved.
%   This code is published under the Eclipse Public License.
%
%   Author: Peter Carbonetto
%           Dept. of Computer Science
%           University of British Columbia
%           September 19, 2008
```