Add support for setting and taking ownership on a pointer in UniquePtrList.

src/Memory/UniquePtrList.hpp

@@ -41,6 +41,15 @@ namespace ArbUt {
 #endif
             return _vector[index];
         }
+        ValueT* TakeOwnership(size_t index) {
+            auto p = _vector[index];
+            _vector[index] = nullptr;
+            return p;
+        }
+        void Set(size_t index, ValueT* ptr) {
+            delete _vector[index];
+            _vector[index] = ptr;
+        }
 
         inline void Remove(size_t index) {
 #ifndef NO_ASSERT