First version of the shared memory transport.

Use via `--transport shmem` cmd option. No pub/sub.

fairmq/zeromq/FairMQContextZMQ.cxx

@@ -12,8 +12,6 @@
  * @author D. Klein, A. Rybalchenko
  */
 
-#include <sstream>
-
 #include <zmq.h>
 
 #include "FairMQLogger.h"
@@ -60,9 +58,12 @@ void FairMQContextZMQ::Close()
 
     if (zmq_ctx_destroy(fContext) != 0)
     {
-        if (errno == EINTR) {
+        if (errno == EINTR)
+        {
             LOG(ERROR) << " failed closing context, reason: " << zmq_strerror(errno);
-        } else {
+        }
+        else
+        {
             fContext = NULL;
             return;
         }