LUCENE-5675: initial fork of BT with versioning added

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/lucene5675@1595064 13f79535-47bb-0310-9956-ffa450edef68
LUCNE-5675: add failing test

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/lucene5675@1595068 13f79535-47bb-0310-9956-ffa450edef68