Fix warnings produced with -Weffc++ in fairmq, base/MQ and Tutorial3.

Remaining warnings originate from boost::msm and boost::mpl.
Also, warnings with missing initializer list entries for DeviceOptions are false positives, since those are PODs.

fairmq/nanomsg/FairMQMessageNN.cxx

@@ -20,14 +20,19 @@
 #include "FairMQMessageNN.h"
 #include "FairMQLogger.h"
 
+using namespace std;
+
 FairMQMessageNN::FairMQMessageNN()
-    : fSize(0)
-    , fMessage(NULL)
+    : fMessage(NULL)
+    , fSize(0)
     , fReceiving(false)
 {
 }
 
 FairMQMessageNN::FairMQMessageNN(size_t size)
+    : fMessage(NULL)
+    , fSize(0)
+    , fReceiving(false)
 {
     fMessage = nn_allocmsg(size, 0);
     if (!fMessage)
@@ -45,6 +50,9 @@ FairMQMessageNN::FairMQMessageNN(size_t size)
  * possible TODO: make this zero copy (will should then be as efficient as ZeroMQ).
 */
 FairMQMessageNN::FairMQMessageNN(void* data, size_t size, fairmq_free_fn *ffn, void* hint)
+    : fMessage(NULL)
+    , fSize(0)
+    , fReceiving(false)
 {
     fMessage = nn_allocmsg(size, 0);
     if (!fMessage)
@@ -146,7 +154,7 @@ void FairMQMessageNN::Copy(FairMQMessage* msg)
     {
         LOG(ERROR) << "failed allocating message, reason: " << nn_strerror(errno);
     }
-    std::memcpy(fMessage, msg->GetMessage(), size);
+    memcpy(fMessage, msg->GetMessage(), size);
     fSize = size;
 }
 

fairmq/nanomsg/FairMQMessageNN.h

@@ -49,6 +49,10 @@ class FairMQMessageNN : public FairMQMessage
     bool fReceiving;
 
     void Clear();
+
+    /// Copy Constructor
+    FairMQMessageNN(const FairMQMessageNN&);
+    FairMQMessageNN operator=(const FairMQMessageNN&);
 };
 
 #endif /* FAIRMQMESSAGENN_H_ */

fairmq/nanomsg/FairMQPollerNN.cxx

@@ -17,6 +17,8 @@
 #include "FairMQPollerNN.h"
 
 FairMQPollerNN::FairMQPollerNN(const vector<FairMQSocket*>& inputs)
+    : items()
+    , fNumItems()
 {
     fNumItems = inputs.size();
     items = new nn_pollfd[fNumItems];

fairmq/nanomsg/FairMQPollerNN.h

@@ -20,7 +20,7 @@
 #include "FairMQPoller.h"
 #include "FairMQSocket.h"
 
-using std::vector;
+using namespace std;
 
 class FairMQPollerNN : public FairMQPoller
 {
@@ -36,6 +36,10 @@ class FairMQPollerNN : public FairMQPoller
   private:
     nn_pollfd* items;
     int fNumItems;
+
+    /// Copy Constructor
+    FairMQPollerNN(const FairMQPollerNN&);
+    FairMQPollerNN operator=(const FairMQPollerNN&);
 };
 
 #endif /* FAIRMQPOLLERNN_H_ */

fairmq/nanomsg/FairMQSocketNN.cxx

@@ -19,7 +19,9 @@
 #include "FairMQLogger.h"
 
 FairMQSocketNN::FairMQSocketNN(const string& type, int num, int numIoThreads)
-    : fBytesTx(0)
+    : fSocket()
+    , fId()
+    , fBytesTx(0)
     , fBytesRx(0)
     , fMessagesTx(0)
     , fMessagesRx(0)