Batch Weka Segmentation: Re-run an interrupted job without redoing unnecessary work
Archipelago: Bugfixes and workarounds

SIFT Point match parameters are bottled directly to work around problems with inpersistence in Serialization.
Cluster Processes are now ack'd, to prevent miscommunication from hanging a cluster run.
Fixed a concurrency bug in ArchipelagoFuture that was causing cluster runs to hang.
Made point-id mapping more reliable in clusterized instances of elastic alignment.
Fiji Archipelago: Uniquely-named client node logs, as per David Hildebrand