LUCENE-6013: remove IndexableFieldType.indexed and FieldInfo.indexed (it's redundant with IndexOptions != null)

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1633296 13f79535-47bb-0310-9956-ffa450edef68
correct exotic whitespace

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1633304 13f79535-47bb-0310-9956-ffa450edef68