SOLR-5327: SOLR-4915, "The root cause should be returned to the user when a SolrCore create call fails", was reverted.

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1531157 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5317: Fix race  when persisting cores in solr.xml

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1531163 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5317: remove debug sys errs

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1531172 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-5269: Fix NGramTokenFilter length filtering

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1531186 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-5269: make test use less RAM

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1531193 13f79535-47bb-0310-9956-ffa450edef68
use FixedBitSet.close()

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1531196 13f79535-47bb-0310-9956-ffa450edef68