RAT-242: Use UTF-8 as default encoding for written reports

Thanks to Matthias Bläsing
https://github.com/apache/creadur-rat/pull/8


git-svn-id: https://svn.apache.org/repos/asf/creadur/rat/trunk@1820237 13f79535-47bb-0310-9956-ffa450edef68
3 files changed