update openstreetmap licence

git-svn-id: https://svn.typo3.org/TYPO3v4/Extensions/m3lib/trunk@80891 735d13b6-9817-0410-8766-e36946ffe9aa
changelog for openstreetmap licence update

git-svn-id: https://svn.typo3.org/TYPO3v4/Extensions/m3lib/trunk@80892 735d13b6-9817-0410-8766-e36946ffe9aa