+ FS:
+ - measure latencies (core, datastore) => trust economy
+ - FS performance benchmarking
+ - integrate with DHT (need DHT API to fit block API better first; also, get rid of the continuation!)
+* DHT: [Nate]
+ - use new block lib in service
+ - provide block-lib compatible API in gnunet_dht_service.h
+ - eliminate continuations in DHT API (not needed, we have auto-retransmit!)