Correct header, content provided by Gabriel in 2012

Signed-off-by: Jody Garnett <jody.garnett@gmail.com>
Hunt down the original and put on our standard header

The provided LGPL license 2.0 (i.e. library) allowed us to redistributed under any later licence, thus LGPL 2.1 (Lesser) qualifies.

Signed-off-by: Jody Garnett <jody.garnett@gmail.com>