LUCENE-5670: add skip/FinalOutput to FST Outputs

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1596369 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-5691: DocTermOrds lookupTerm is wrong in some cases

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1596370 13f79535-47bb-0310-9956-ffa450edef68