SOLR-5188: The default LogWatcher should default to enabled and add some more LogWatcher init logging.

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1517805 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5188: Bring back a test that checks the default LogWatcher enabled setting.

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1517816 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5195 - remove SolrCore reference from UIMAUpdateRequestProcessor

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1518018 13f79535-47bb-0310-9956-ffa450edef68
Merge branch 'trunk' of http://git.apache.org/lucene-solr into lucene-4818
LUCENE-4818 - improved performance test