Add CMemoryCardDriver::CMemoryCardDriver

Former-commit-id: 8d49e80502

include/rstl/pair.hpp

@@ -10,6 +10,12 @@ public:
   inline pair() {}
   inline pair(const L& first, const R& second) : first(first), second(second) {}
 
+  inline pair& operator=(const pair& other) {
+    first = other.first;
+    second = other.second;
+    return *this;
+  }
+
   L first;
   R second;
 };