xo-interpreter2 stack: + stringtable() in RuntimeContext api

src/procedure2/ObjectPrimitives.cpp

@@ -75,6 +75,8 @@ namespace xo {
 
             auto cdr_list = obj<AGCObject,DList>::from(cdr);
 
+            //auto T = DTypeVarRef::_make(rcx.allocator(), "T");
+
             return DList::cons(rcx.allocator(),
                                car,
                                cdr_list.data());

src/procedure2/facet/IRuntimeContext_DSimpleRcx.cpp

@@ -21,6 +21,12 @@ namespace xo {
             return self.allocator();
         }
 
+        auto
+        IRuntimeContext_DSimpleRcx::stringtable(const DSimpleRcx & self) noexcept -> StringTable *
+        {
+            return self.stringtable();
+        }
+
         auto
         IRuntimeContext_DSimpleRcx::visit_pools(const DSimpleRcx & self, MemorySizeVisitor visitor) -> void
         {