LUCENE-5088: Added TermFilter to filter docs by a specific term.

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1503823 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-5088: Fixed test

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1503837 13f79535-47bb-0310-9956-ffa450edef68
oops, forgot to remove system.out.println

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1503843 13f79535-47bb-0310-9956-ffa450edef68
SOLR-3633 - web UI reports an error if CoreAdminHandler says there are no SolrCores

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1503853 13f79535-47bb-0310-9956-ffa450edef68