HandleR{FindNode,GetPeers} frees Nodes not added to the Search.
Increment pending_queries on Node.
An RGetPeers Message may point to Nodes it does not own. Send it
before the Nodes might be freed.
Empty blocks are ok to Node_DestroyBlock
tid (not token)
Dht_MessageStr with message type data.
Fix leak in hooks_tests
A missing key is not an error.
Vary test nodes better.
Table_MarkReply and Table_MarkQuery adds node when not found.
Count replies by type on node, use count in search processing.
Remove Search_NodesToQuery