Upgrade license to GPLv3 or higher.

git-svn-id: http://mancubus.net/svn/hosted/eternity/trunk@2791 86ba831e-150c-0410-ab35-e06eaae15ed9
Allowable additional terms and conditions.

git-svn-id: http://mancubus.net/svn/hosted/eternity/trunk@2792 86ba831e-150c-0410-ab35-e06eaae15ed9
Small change to reciprocity permission that might have prevented building on Android where a dev key comes with the SDK.

git-svn-id: http://mancubus.net/svn/hosted/eternity/trunk@2793 86ba831e-150c-0410-ab35-e06eaae15ed9