SOLR-3279: upgrade Carrot2 to version 3.6.2, missing changes

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1427758 13f79535-47bb-0310-9956-ffa450edef68
SOLR-4253: Misleading resource loading warning from Carrot2 clustering component fixed

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1427759 13f79535-47bb-0310-9956-ffa450edef68