NUTCH-1708 use same id when indexing and deleting redirects

git-svn-id: https://svn.apache.org/repos/asf/nutch/branches/2.x@1614375 13f79535-47bb-0310-9956-ffa450edef68
NUTCH-1819 Check for batchId input in GeneratorJob#run

git-svn-id: https://svn.apache.org/repos/asf/nutch/branches/2.x@1614801 13f79535-47bb-0310-9956-ffa450edef68