Use a Drop trait to keep track of lifetimes for recycled objects.

* Move recycler instances to the point of allocation
* sinks no longer need to call `recycle`
* Remove the recycler arguments from all the apis that no longer need them

src/lib.rs

@@ -39,6 +39,7 @@ pub mod payment_plan;
 pub mod record_stage;
 pub mod recorder;
 pub mod recvmmsg;
+pub mod recycler;
 pub mod replicate_stage;
 pub mod request;
 pub mod request_processor;