To be able to label incoming tor connections as different from normal localhost connections in e.g. `getpeerinfo` and the peers list in the GUI it'd be useful to have them connect on an alternative local-only port. Or even better, a UNIX socket.

For manually set-up hidden services this would have to be configured manually and could add a `hsport` option or such. The external port would still appear as `XXXXXXXXX.onion:8333`, however internally it would redirect to a that port.

In the case of `torcontrol` this would be easy to set up automatically. It could add a new (localhost) binding port automatically and this code would have to be changed:
- https://github.com/bitcoin/bitcoin/blob/master/src/torcontrol.cpp#L441
- https://github.com/bitcoin/bitcoin/blob/master/src/torcontrol.cpp#L477

chainman.InitializeChainstate(*Assert(node.mempool));
                chainman.m_total_coinstip_cache = nCoinCacheUsage;
                chainman.m_total_coinsdb_cache = nCoinDBCache;
                UnloadBlockIndex(node.mempool.get(), chainman);
                
                
                pblocktree.reset();
                pblocktree.reset(new CBlockTreeDB(nBlockTreeDBCache, false, fReset));
                if (fReset) {
                    pblocktree->WriteReindexing(true);
                    
                    if (fPruneMode)
                        CleanupBlockRevFiles();
                }
                if (ShutdownRequested()) break;
                
                
                
                
                if (!chainman.LoadBlockIndex(chainparams)) {
                    if (ShutdownRequested()) break;
                    strLoadError = _("Error loading block database");
                    break;
                }
                
                
                if (!chainman.BlockIndex().empty() &&
                        !LookupBlockIndex(chainparams.GetConsensus().hashGenesisBlock)) {
                    return InitError(_("Incorrect or no genesis block found. Wrong datadir for network?"));
                }