Eradicate all uses of std::bind()

Change-Id: I6e1ccf2d87b76142e6d519c1a288d03022e4d167
diff --git a/core/common.hpp b/core/common.hpp
index dd6d4fb..34da654 100644
--- a/core/common.hpp
+++ b/core/common.hpp
@@ -76,4 +76,7 @@
 
 } // namespace ndn
 
+#define FORWARD_TO_MEM_FN(func) \
+  [this] (auto&&... args) { this->func(std::forward<decltype(args)>(args)...); }
+
 #endif // NDN_TOOLS_CORE_COMMON_HPP