qualify make_unique

dune-common turns on c++14 automatically, so it's natively
available, leading to ambiguous calls

dune/xt/common/filesystem.cc

@@ -51,14 +51,14 @@ std::unique_ptr<boost::filesystem::ofstream> make_ofstream(const boost::filesyst
                                                            const std::ios_base::openmode mode)
 {
   test_create_directory(path.string());
-  return make_unique<boost::filesystem::ofstream>(path, mode);
+  return Dune::XT::Common::make_unique<boost::filesystem::ofstream>(path, mode);
 }
 
 std::unique_ptr<boost::filesystem::ifstream> make_ifstream(const boost::filesystem::path& path,
                                                            const std::ios_base::openmode mode)
 {
   test_create_directory(path.string());
-  return make_unique<boost::filesystem::ifstream>(path, mode);
+  return Dune::XT::Common::make_unique<boost::filesystem::ifstream>(path, mode);
 }
 
 //! read a file and output all lines containing filter string to a stream

dune/xt/common/logging.cc

@@ -29,7 +29,7 @@ Logging::Logging()
   , emptyLogStream_(logflags_)
 {
   for (const auto id : streamIDs_)
-    streammap_[id] = make_unique<EmptyLogStream>(logflags_);
+    streammap_[id] = Dune::XT::Common::make_unique<EmptyLogStream>(logflags_);
 }
 
 void Logging::deinit()
@@ -66,7 +66,7 @@ void Logging::create(int logflags, const std::string logfile, const std::string
 
   for (const auto id : streamIDs_) {
     flagmap_[id]   = logflags;
-    streammap_[id] = make_unique<FileLogStream>(id, flagmap_[id], logfile_);
+    streammap_[id] = Dune::XT::Common::make_unique<FileLogStream>(id, flagmap_[id], logfile_);
   }
 } // create
 
@@ -119,7 +119,7 @@ int Logging::add_stream(int flags)
   int streamID = streamID_int;
   streamIDs_.push_back(streamID);
   flagmap_[streamID]   = (flags | streamID);
-  streammap_[streamID] = make_unique<FileLogStream>(streamID, flagmap_[streamID], logfile_);
+  streammap_[streamID] = Dune::XT::Common::make_unique<FileLogStream>(streamID, flagmap_[streamID], logfile_);
   return streamID_int;
 } // add_stream