LUCENE-5240: additional safety in Tokenizer state machine

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1529482 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5305: Admin UI - Reloading System-Information on Dashboard does not work anymore

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1529502 13f79535-47bb-0310-9956-ffa450edef68