LUCENE-6090: use raw deflate stream for CompressionMode.HIGH_COMPRESSION

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1643075 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-6088: TermsFilter implements Accountable.


git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1643079 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-6091: Fix UsageTrackingFilterCachingPolicy's handling of null DocIdSets.


git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1643085 13f79535-47bb-0310-9956-ffa450edef68
move optimizations section up, and move compression changes to optimizations

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1643090 13f79535-47bb-0310-9956-ffa450edef68
SOLR-4799 faster join using join=zipper aka merge join for nested DIH EntityProcessors

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1643097 13f79535-47bb-0310-9956-ffa450edef68