Make explicit where the default platform encoding is being used

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/io/trunk@1468883 13f79535-47bb-0310-9956-ffa450edef68
Make explicit where the default platform encoding is being used

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/io/trunk@1468885 13f79535-47bb-0310-9956-ffa450edef68