Backport changes from feature-bind.

src/utils/directory.h

@@ -37,9 +37,9 @@
 #ifndef RTORRENT_UTILS_DIRECTORY_H
 #define RTORRENT_UTILS_DIRECTORY_H
 
+#include <cstdint>
 #include <string>
 #include <vector>
-#include <inttypes.h>
 
 namespace utils {
 

src/utils/list_focus.h

@@ -37,7 +37,7 @@
 #ifndef RTORRENT_UTILS_LIST_FOCUS_H
 #define RTORRENT_UTILS_LIST_FOCUS_H
 
-#include lt_tr1_functional
+#include <functional>
 
 namespace utils {