Ministry of Justice - FOSS Paper Updated

Barry Polley has kindly sent me a revised verion of the MoJ open source discussion paper.

Some changes reflect further consultation, others reflect feedback from the NZOSS list and website.

A summary of changes is as follows:

- Added TCO policy (#11)
- Updated references to OSS adoption within public sector (global and NZ)
- Corrections to version and documentation policies
- Wording changes based on additional feedback from readers.