SOLR-5488: print exception stack trace rather than eating it

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1559770 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-5392: make ShingleAnalyzerWrapper.getWrappedAnalyzer() public final

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1559773 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5608: Boost wait from 300ms to 500ms

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1559788 13f79535-47bb-0310-9956-ffa450edef68