NUTCH-1325 HostDB for Nutch

git-svn-id: https://svn.apache.org/repos/asf/nutch/trunk@1560316 13f79535-47bb-0310-9956-ffa450edef68
hostdb rules have double dots in class path

git-svn-id: https://svn.apache.org/repos/asf/nutch/trunk@1560327 13f79535-47bb-0310-9956-ffa450edef68