LUCENE-5090: fix test bug that was using mismatched readers when faceting with SortedSetDVs

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1503423 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-4845: close tmp directory; fix test to catch un-closed files; add missing suggester.close()

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1503458 13f79535-47bb-0310-9956-ffa450edef68