SOLR-5577: don't start timer thread on expiration

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1556002 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-5385: add missing folder & svn:ignore

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1556012 13f79535-47bb-0310-9956-ffa450edef68