Maarten Bosmans license statement

[Maarten Bosmans]

Hi developers,

I'm working on some performance issues loading Excel documents in Calc.
>From looking into bugs 100709 and 53698 it seems to me that there's
ample opportunity to speed things up significantly (at least 2x) with
relatively minor changes.

All of my past & future contributions to LibreOffice may be
licensed under the MPLv2/LGPLv3+ dual license.

Maarten Bosmans