SOLR-4752: There are some minor bugs in the Collections API parameter validation.

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1471091 13f79535-47bb-0310-9956-ffa450edef68
SOLR-4547: Move logging of filenames on commit from INFO to DEBUG.

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1471105 13f79535-47bb-0310-9956-ffa450edef68
SOLR-4753: add assert so that tests fail when SolrCores are closed too many times

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1471114 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-4766: Added a PatternCaptureGroupTokenFilter that uses Java regexes to emit multiple tokens one for each capture group in one or more patterns

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1471347 13f79535-47bb-0310-9956-ffa450edef68