SOLR-5012: optimize search with filter when filterCache is null

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1501004 13f79535-47bb-0310-9956-ffa450edef68
Update build dependencies (Groovy, Pegdown)

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1501007 13f79535-47bb-0310-9956-ffa450edef68
Update svnkit

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1501011 13f79535-47bb-0310-9956-ffa450edef68