test to help verify that functions wrapping queries (or filtered by queries) are only evaluated for docs that match those queries

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1548955 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-5362: IndexReader and SegmentCoreReaders now throw AlreadyClosedException if the refCount in incremented but is less that 1.

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1549012 13f79535-47bb-0310-9956-ffa450edef68