[BugFix] Fixes mallocallocator for compilers without C++11 support.

This is the same fix as for debugallocator. See flyspray #1287.
The problem was that move semantics were used if the compiler supports
variadic templates.

dune/common/mallocallocator.hh

@@ -79,7 +79,7 @@ namespace Dune
     {
       ::new((void*)p)T(val);
     }
-#if HAVE_VARIADIC_TEMPLATES || DOXYGEN
+#if ( HAVE_VARIADIC_TEMPLATES && HAVE_RVALUE_REFERENCES ) || DOXYGEN
     //! construct an object of type T from variadic parameters
     //! \note works only with newer C++ compilers
     template<typename ... _Args>