Make COM use the RPC runtime as the backend for RPC calls. Based on a

dlls/ole32/compobj.c

@@ -32,8 +32,6 @@
  *     of registered class objects: ISCM::ServerRegisterClsid et al
  *   - Implement the OXID resolver so we don't need magic pipe names for
  *     clients and servers to meet up
- *   - Flip our marshalling on top of the RPC runtime transport API,
- *     so we no longer use named pipes to communicate
  *
  *   - Make all ole interface marshaling use NDR to be wire compatible with
  *     native DCOM

dlls/ole32/compobj_private.h

@@ -197,9 +197,11 @@ IRpcStubBuffer *mid_to_stubbuffer(wine_marshal_id *mid);
 
 void start_apartment_listener_thread(void);
 
-extern HRESULT PIPE_GetNewPipeBuf(wine_marshal_id *mid, IRpcChannelBuffer **pipebuf);
-void RPC_StartLocalServer(REFCLSID clsid, IStream *stream);
+HRESULT PIPE_GetNewPipeBuf(wine_marshal_id *mid, IRpcChannelBuffer **pipebuf);
 HRESULT RPC_ExecuteCall(RPCOLEMESSAGE *msg, IRpcStubBuffer *stub);
+HRESULT RPC_RegisterInterface(REFIID riid);
+void RPC_UnregisterInterface(REFIID riid);
+void RPC_StartLocalServer(REFCLSID clsid, IStream *stream);
 
 /* This function initialize the Running Object Table */
 HRESULT WINAPI RunningObjectTableImpl_Initialize(void);

dlls/ole32/marshal.c

@@ -153,6 +153,9 @@ HRESULT register_ifstub(APARTMENT *apt, STDOBJREF *stdobjref, REFIID riid, IUnkn
             stub_manager_ext_addref(manager, 1);
     }
 
+    /* FIXME: check return value */
+    RPC_RegisterInterface(riid);
+
     stdobjref->ipid = ifstub->ipid;
 
     stub_manager_int_release(manager);

dlls/ole32/stubmanager.c

@@ -418,8 +418,10 @@ struct ifstub *stub_manager_new_ifstub(struct stub_manager *m, IRpcStubBuffer *s
 static void stub_manager_delete_ifstub(struct stub_manager *m, struct ifstub *ifstub)
 {
     TRACE("m=%p, m->oid=%s, ipid=%s\n", m, wine_dbgstr_longlong(m->oid), debugstr_guid(&ifstub->ipid));
-    
+
     list_remove(&ifstub->entry);
+
+    RPC_UnregisterInterface(&ifstub->iid);
         
     IUnknown_Release(ifstub->stubbuffer);
     IUnknown_Release(ifstub->iface);