Fix compression bug on highly compressible inputs with LZ4.compressHC.


git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1520060 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5210: add block join support to example

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1520081 13f79535-47bb-0310-9956-ffa450edef68