LUCENE-4856: If there are no matches for a given field, return the first maxPassages sentences

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1458865 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-4856: revert ... need to add option to Solr

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1458869 13f79535-47bb-0310-9956-ffa450edef68
SOLR-4617: SolrCore#reload needs to pass the deletion policy to the next  SolrCore through it's constructor rather than setting a field after.

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1458880 13f79535-47bb-0310-9956-ffa450edef68