LUCENE-6117: make infostream usable again

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1646240 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-6114: remove bw compat cruft from packedints

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1646247 13f79535-47bb-0310-9956-ffa450edef68
SOLR-6857: Idea modules missing dependencies

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1646272 13f79535-47bb-0310-9956-ffa450edef68