LUCENE-5390: Loosen assert in IW on pending event after close

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1556942 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-5345: add new BlendedInfixSuggester

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1556952 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5543: move changes entry from 4.7.0 to 4.6.1.


git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1556968 13f79535-47bb-0310-9956-ffa450edef68