Reorganise memory model to make it clear Memory.hpp should be referenced.

tests/UniquePtrListTests.cpp

@@ -1,6 +1,6 @@
 #ifdef TESTS_BUILD
 #include "../extern/doctest.hpp"
-#include "../src/Memory/UniquePtrList.hpp"
+#include "../src/Memory/__UniquePtrList.hpp"
 using namespace ArbUt;
 
 TEST_CASE("Create Unique Ptr list, append") {