c++ relaynode - added template rule for the linker
c++ relaynode - added template rule for the linker

arnuschky/RelayNode,martindale/RelayNode,danoctavian/RelayNode,arnuschky/RelayNode,danoctavian/RelayNode,TheBlueMatt/RelayNode,braiins/RelayNode,martindale/RelayNode,BitcoinRelayNetwork/RelayNode,BitcoinRelayNetwork/RelayNode,braiins/RelayNode,TheBlueMatt/RelayNode,braiins/RelayNode,BitcoinRelayNetwork/RelayNode,braiins/RelayNode