IPC (feature-gated) (#1654)

* moving ipc deriving to trait

* refactoring of the client

* all compiled

* proved all working

* warnings purged

* allow hypervisor to specify initialization payload in two ways

* using binary initialisation payload for sync

* some docs

* logger to separate crate

* log settings for sync bin

* forwarding logging arguments to the sync

ipc/nano/src/lib.rs

@@ -23,6 +23,7 @@ extern crate jsonrpc_core;
 use jsonrpc_core::IoHandler;
 
 pub use ipc::{WithSocket, IpcInterface, IpcConfig};
+pub use nanomsg::Socket as NanoSocket;
 
 use std::sync::*;
 use std::sync::atomic::*;
@@ -54,9 +55,9 @@ impl<S> GuardedSocket<S> where S: WithSocket<Socket> {
 }
 
 impl<S> Deref for GuardedSocket<S> where S: WithSocket<Socket> {
-    type Target = S;
+    type Target = Arc<S>;
 
-    fn deref(&self) -> &S {
+    fn deref(&self) -> &Arc<S> {
         &self.client
     }
 }