Upgrade to C++-14:

* Remove cxx14 compatibility layer from ripple
  * Update travis to clang 3.6 and drop gcc 4.8
  * Remove unneeded beast CXX14 defines
  * Do not run clang build with gdb with travis
  * Update circle ci to clang 3.6 & gcc-5
  * Don't run rippled in gdb, clang builds crash gdb
  * Staticly link libstdc++, boost, ssl, & protobuf
  * Support builds on ubuntu 15.10

src/ripple/basics/impl/ResolverAsio.cpp

@@ -21,7 +21,6 @@
 #include <ripple/basics/ResolverAsio.h>
 #include <beast/asio/IPAddressConversion.h>
 #include <beast/asio/placeholders.h>
-#include <beast/cxx14/memory.h>
 #include <beast/module/asio/AsyncObject.h>
 #include <beast/threads/WaitableEvent.h>
 #include <boost/asio.hpp>
@@ -29,6 +28,7 @@
 #include <cassert>
 #include <deque>
 #include <locale>
+#include <memory>
 
 namespace ripple {