port rev. 2534: Update to nUnit 2.6.2
port rev. 2534:
Update to nUnit 2.6.2


git-svn-id: 98f681d7a2907ee2a41df434552134740bcc8829@85018 81fbe566-5dc4-48c1-bdea-7421811ca204

dawidcieszynski/ZXing.Net,dawidcieszynski/ZXing.Net