build: Always build in C++11 mode.
This commit also includes update of websocketpp submodule, as the
previous version has compilation problems on OSX with XCode 6.1
Change-Id: I8c9670d0026d840838d77e610e50679ee5ede7a5
Refs: #1930, #2082
diff --git a/common.hpp b/common.hpp
index cf236ca..0271006 100644
--- a/common.hpp
+++ b/common.hpp
@@ -65,17 +65,21 @@
using boost::noncopyable;
using boost::scoped_ptr;
-using ndn::shared_ptr;
-using ndn::weak_ptr;
-using ndn::enable_shared_from_this;
-using ndn::make_shared;
-using ndn::static_pointer_cast;
-using ndn::dynamic_pointer_cast;
-using ndn::const_pointer_cast;
-using ndn::function;
-using ndn::bind;
-using ndn::ref;
-using ndn::cref;
+using std::shared_ptr;
+using std::unique_ptr;
+using std::weak_ptr;
+using std::bad_weak_ptr;
+using std::make_shared;
+using std::enable_shared_from_this;
+
+using std::static_pointer_cast;
+using std::dynamic_pointer_cast;
+using std::const_pointer_cast;
+
+using std::function;
+using std::bind;
+using std::ref;
+using std::cref;
using ndn::Interest;
using ndn::Data;