src: Removing unnecessary use of cref() in concert with make_shared

This commit also replaces all usages of shared_ptr<T>(new T) with
make_shared<T> in Face class implementation.

Change-Id: I44971c44eb7f2c25ecfe00e185309973c9cbd246
Refs: #1592
diff --git a/src/name.hpp b/src/name.hpp
index 3817a66..1abffbc 100644
--- a/src/name.hpp
+++ b/src/name.hpp
@@ -30,7 +30,7 @@
 /**
  * A Name holds an array of Name::Component and represents an NDN name.
  */
-class Name : public ptr_lib::enable_shared_from_this<Name>
+class Name : public enable_shared_from_this<Name>
 {
 public:
   /// @brief Error that can be thrown from Name