minor: Solr 4.4 removed the CoreContainer constructor internally calling the load() method. Because of that not explicit calling load() will end up in exceptions as described in http://mail-archives.apache.org/mod_mbox/lucene-solr-user/201301.mbox/%3CB7B8B36F1A0BE24F842758C318E56E925EB334%40EXCHDB2.na1.ad.group%3E