FairMQ: Fix various errors from CI

* move Plugins::Version to fair::mq::tools
* fix Parser interface
* make device a shared pointer in main
* provide std::hash template specialization
* fix FairMQ.Plugins/FairMQ.PluginsStatic when run with ctest
* fix MQ/serialization example
* add --no-as-needed flag
* GCC 4 does not support member refs, move to pointer types

fairmq/tools/CppSTL.h

@@ -9,7 +9,9 @@
 #ifndef FAIR_MQ_TOOLS_CPPSTL_H
 #define FAIR_MQ_TOOLS_CPPSTL_H
 
+#include <functional>
 #include <memory>
+#include <type_traits>
 
 namespace fair
 {
@@ -25,6 +27,18 @@ std::unique_ptr<T> make_unique(Args&& ...args)
     return std::unique_ptr<T>(new T(std::forward<Args>(args)...));
 }
 
+// provide an enum hasher to compensate std::hash not supporting enums in C++11
+template<typename Enum>
+struct HashEnum
+{
+    auto operator()(const Enum& e) const noexcept
+    -> typename std::enable_if<std::is_enum<Enum>::value, std::size_t>::type
+    {
+        using _type = typename std::underlying_type<Enum>::type;
+        return std::hash<_type>{}(static_cast<_type>(e));
+    }
+};
+
 } /* namespace tools */
 } /* namespace mq */
 } /* namespace fair */