SOLR-6232: Allow unloading of cores that have failed to init

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1611047 13f79535-47bb-0310-9956-ffa450edef68
SOLR-6232: Missed a configset

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1611147 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-5826: Support proper hunspell case handling and related options

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1611161 13f79535-47bb-0310-9956-ffa450edef68
Remove outdated sha1 file

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1611281 13f79535-47bb-0310-9956-ffa450edef68
test seekCeil in pull postings API; fix trunk-only bug

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1611305 13f79535-47bb-0310-9956-ffa450edef68