xo-object2: tidy IGCObject_DList

idl/IGCObject_DList.json5

@@ -0,0 +1,15 @@
+{
+    mode: "implementation",
+    includes: [
+//        "<xo/gc/GCObject.hpp>",
+//        "<xo/alloc2/Allocator.hpp>"
+    ],
+    local_types: [ ],
+    namespace1: "xo",
+    namespace2: "scm",
+    facet_idl: "idl/GCObject.json5",
+    brief: "provide AGCObject interface for DList",
+    using_doxygen: true,
+    repr: "DList",
+    doc: [ "implement AGCObject for DList" ],
+}